Swinging Terminology: The Complete UK Lifestyle Glossary

Nobody hands you a vocabulary list when you first start looking into the lifestyle.

You just find yourself reading a profile full of words and initials you half recognise, trying to work out from context whether you have understood them properly, and hoping nobody asks.

Sophie and I did exactly that. There were plenty of phrases early on that we nodded along to and quietly looked up afterwards.

So this is the glossary we wish somebody had given us. Plain English, no coy definitions, and no assumption that you already know what any of it means.

More importantly, where a term means different things to different people, we say so. There is no official lifestyle dictionary, and some of the biggest misunderstandings happen when two people use exactly the same word and mean different things by it.

Two things before you start.

Nobody is going to test you on any of this. Using a word slightly differently is not embarrassing. Asking somebody what they mean is usually the smartest thing you can do.

Definitions vary. Treat this glossary as a starting point for a conversation rather than a contract. If the detail matters, ask.

The Basics

The lifestyle

A common umbrella term used within swinging and related social non-monogamous communities. People use it because it covers more than simply having sex with other people. The lifestyle also includes clubs, socials, events, friendships and the wider community around them. You will regularly see it shortened to LS.

LS

Short for lifestyle. “New to LS”, “LS couple” and “LS friends” all simply mean lifestyle.

Swinging

Consensual sexual activity involving people outside an established relationship, with the knowledge and agreement of everybody involved. Swinging is usually centred more on shared sexual and social experiences than on building additional romantic relationships, although real life is rarely as neatly divided as definitions make it sound.

Swinger

Someone who participates in swinging. The word is often associated with couples, but single people also take part.

The scene

The lifestyle community, its clubs, events and social circles. “New to the scene” simply means somebody is new to that world.

Newbie, or new to the lifestyle

Someone who is new to swinging or still working out what they are comfortable with. It tells you nothing about what they will or will not do. Most people remember being new themselves and will happily explain things if you ask.

Vanilla

Anything or anyone outside the lifestyle. Your “vanilla friends” are simply friends who are not part of it. It is normally descriptive rather than insulting. Most people in the lifestyle still spend the overwhelming majority of their lives doing completely ordinary vanilla things.

Dirty vanilla, or spicy vanilla

Used by some people to describe a couple who enjoy the atmosphere, the socialising and sometimes the watching, but who do not swap with anybody. It is not universal terminology and plenty of people in the scene have never heard it. The position it describes is very common, though, and it is not a stage on the way to something else.

ENM and CNM

Ethical non-monogamy and consensual non-monogamy. Broader umbrella terms covering swinging, open relationships, polyamory and other relationship structures involving more than one sexual or romantic connection with everybody’s knowledge and agreement. Swinging sits underneath that larger umbrella.

Play

A deliberately non-specific term for sexual activity in a lifestyle context. “We played with another couple” tells you something happened without explaining exactly what. That vagueness is usually intentional.

Session

Sometimes used as another word for play. More often it belongs to the kink vocabulary, where it describes an arranged scene between people in agreed roles. Context decides which is meant.

Meet

An arranged meeting with another person or couple. A meet can mean nothing more than drinks in a pub to see whether everybody gets on. Never assume that agreeing to meet means agreeing to anything sexual.

Play date

A meet where sexual activity is more clearly anticipated or on the table than it would be at a first drink. It still does not mean anybody has consented to anything in advance.

People, Profiles and Roles

Couple

Two people in an established relationship taking part together. A lot of lifestyle clubs, events and websites were historically built primarily around couples, although that varies considerably now.

Single female, or SF

A woman taking part without a partner. You will regularly see SF on profiles and event listings.

Single male, or SM

A man taking part without a partner. Single men usually face more restrictions at clubs and events because they often considerably outnumber couples and single women on lifestyle platforms and at events

Third

Someone joining an established couple for a threesome or another shared experience. Widely used, but some people dislike it because it can make the additional person sound like an accessory to the couple rather than somebody with equal preferences and boundaries.

Unicorn

Usually a single bisexual or bi-curious woman interested in meeting a couple. The nickname comes from how sought-after and comparatively difficult such matches can be to find. Some women dislike the term entirely, particularly when couples treat “finding a unicorn” like shopping for a missing component.

Unicorn hunting

Usually used critically, to describe a couple searching for a single woman who is expected to fit a very specific set of rules or expectations. Wanting to meet a single woman is not inherently a problem. Treating her as though her role is simply to complete an established couple is where the criticism comes from.

Cowboy and cowgirl

Somebody who becomes involved with one half of a couple while working, openly or otherwise, to separate them from their partner. Borrowed from polyamory.

Bull

A man taking part with a woman in a hotwife, stag and vixen or cuckold dynamic. The expected role varies considerably between people. Never assume “bull” automatically means dominant behaviour or humiliation unless everyone has specifically agreed that.

Hotwife and hotwifing

A woman in a committed relationship who has sexual experiences with other men with her partner’s full knowledge and encouragement. Her partner may be present or absent. Hotwifing describes the dynamic itself.

Hothusband

A less commonly used counterpart to hotwife. Generally refers to a man having sexual experiences with others with his partner’s knowledge and encouragement.

Stag and vixen

A dynamic in which the stag enjoys or takes pride in his female partner, the vixen, having experiences with other men. It overlaps with hotwifing. Definitions differ between couples, particularly around whether the stag participates, watches or is absent.

Cuckold

A related but distinct dynamic, commonly involving a male partner experiencing submission, humiliation or another psychological element connected with his partner having sex with somebody else. People sometimes use cuckold and hotwife interchangeably. Many people involved in those dynamics very much do not. Ask.

Cuckquean

The much less used female counterpart to cuckold, describing a woman whose partner is involved with other people. As with cuckold, people use it somewhat differently, and the emotional shape of the arrangement varies between the people in it.

Bisexual, or bi

Attraction to more than one gender. How an individual experiences or describes it is theirs to define.

Bi-curious

Someone interested in exploring same-sex attraction or activity who may have little or no previous experience.

Bi-comfortable

Lifestyle shorthand rather than a formal sexual orientation. It generally means somebody who identifies as straight but is comfortable with some same-sex physical closeness during shared sexual situations. What that includes varies enormously. For one person it might simply mean being comfortable with some same-sex contact during group play. For somebody else it may mean considerably more. Ask.

Heteroflexible

Usually describes somebody who considers themselves predominantly heterosexual but is open to some same-sex attraction or experiences. Again, the individual decides what the label means for them.

Pansexual

Attraction where gender is not necessarily a determining factor. It is a sexual orientation, not a lifestyle role.

What People Mean When They Talk About Play

Soft swap

Probably the most misunderstood phrase in the lifestyle. Broadly, soft swap means sexual activity with somebody other than your own partner without penetrative intercourse. That may include kissing, touching and oral sex.

But this is where things get complicated. Some couples include oral sex. Some specifically exclude it. Some describe little more than kissing and touching as soft swap. Never assume another couple’s definition matches yours. “When you say soft swap, what does that include for you?” is exactly the right question.

Full swap, or FS

Generally means penetrative sex with somebody other than your established partner. Even here, boundaries can still differ considerably around particular activities and safer-sex practices.

Same room

Partners remain in the same room while play happens.

Separate room

Partners are comfortable playing away from one another, either in different rooms at the same event or sometimes independently.

Soft swap same room

A very common starting point for couples. It can also be where somebody chooses to stay permanently. There is no progression ladder in the lifestyle and nobody earns points for eventually becoming full swap.

Full swap same room, full swap separate room

Full swap with both partners remaining in the same room, or full swap where partners are comfortable going into separate rooms. Both phrasings appear on profiles constantly.

Open swinging, or open room

Usually means partners play while remaining in the same shared space. At clubs, “open room” can also simply describe a playroom that other members can see into or enter, subject to the venue’s rules. People use both phrases inconsistently, so it is worth checking which sense is meant.

Closed swinging, or closed door

Usually refers to playing privately or in separate rooms rather than alongside your partner. The phrase can also describe the physical room itself at a venue. Like open swinging, it is used inconsistently, so context matters and asking costs nothing.

SRSP, SRDP and DRDP

SRSP usually means same room, same partner. SRDP means same room, different partner. DRDP means different room, different partner. These abbreviations are more common on American sites than UK ones, but you will still see them. As with most lifestyle shorthand, ask if there is any doubt.

Closed-group swinging

A group of people who play within an agreed circle rather than continually meeting new partners. Sometimes two or more couples form an ongoing closed group.

Threesome

Sexual activity involving three people.

MFM

Male, female, male. Usually describes a threesome involving one woman and two men. Do not assume from the letter order what contact will or will not happen between the two men.

MMF

Male, male, female. Some people use the order to indicate bisexual interaction between the men and distinguish it from MFM. Others use MFM and MMF interchangeably. If that distinction matters, ask.

FMF

Female, male, female. Usually one man and two women.

FFM

Female, female, male. As with MFM and MMF, some people use the letter order to indicate interaction between the two women and others do not. There is no universal rule.

Foursome

Sexual activity involving four people. In the lifestyle that often means two couples, but it does not have to.

Moresome

A loose term for group play involving several people, usually once “threesome” or “foursome” stops being useful. There is no agreed cutoff. Some people mean more than three, others mean more than four.

Group sex

A broad description for sexual activity involving more than two people.

Orgy

A much older and more loaded word, generally describing group sex involving several people. It is also one of the reasons outsiders imagine every swingers club is one enormous room where everybody immediately has sex. That is not how most clubs actually work.

Watching

Exactly what it sounds like. Some couples attend clubs primarily because they enjoy watching rather than taking part. Watching consensual activity from an appropriate place is different from treating somebody’s activity as an invitation to join.

Voyeur and voyeurism

Enjoying watching consensual sexual activity. In ordinary legal or clinical use, “voyeurism” can have other meanings involving people being observed without their consent. That is not what lifestyle members normally mean when they describe consensual watching in an adult venue.

Exhibitionist and exhibitionism

Enjoying being watched while doing something sexual. Again, consent and the context of the venue matter.

Hall pass

Permission within a relationship for one partner to have an experience independently. It may mean a one-off situation or be part of an ongoing agreement.

Solo play, or separate play

Taking part without your partner present. Whether that is allowed depends entirely on the agreements within that relationship.

Partner swapping

An older descriptive term for swinging.

Wife swapping

An older phrase still used by the press and occasionally by people within the scene. Many lifestyle members dislike it because it makes women sound like objects being exchanged between men, and it does not reflect the way modern swinging actually works.

Quick Reference: Acronyms

The shorthand you are most likely to meet on profiles, event listings and in messages. Each one links to its full entry.

• LS lifestyle
• SF single female
• SM single male
• FS full swap
• MFM male, female, male
• MMF male, male, female
• FMF female, male, female
• FFM female, female, male
• SRSP same room, same partner
• SRDP same room, different partner
• DRDP different room, different partner
• NSA no strings attached
• DTF down to fuck
• NSFW not safe for work
• DDF drug and disease free
• HWP height-weight proportionate
• ENM / CNM ethical or consensual non-monogamy
• NRE new relationship energy
• OPP one penis policy
• STI sexually transmitted infection
• PnP party and play

Clubs, Socials and Events

Social, or meet and greet

An organised event designed primarily for meeting other lifestyle people socially. Usually held in a bar, pub, hotel or private function space. Everyone stays clothed and sexual activity is not part of the event. For many new couples this is the easiest way into the community.

Munch

A casual social gathering usually held in an ordinary public venue. The word originated in kink communities but is also used around wider ENM and lifestyle circles.

Swingers club

An adult venue where lifestyle members can socialise and where consensual sexual activity is permitted in designated areas. Clubs differ enormously. Some feel like nightclubs, others closer to spas or social venues. Some have large open playrooms and others offer mainly private spaces.

Playroom

A designated area of a club where sexual activity is allowed. Being inside a playroom does not mean anybody is available to anybody else.

Open play area

A shared play space where other members may be able to watch. The venue’s rules determine whether people can enter, watch or approach.

Private playroom

A room intended to give people greater privacy. Whether doors lock, and what the club’s access rules are, varies by venue.

Dress down

A club rule or custom requiring members to change out of ordinary outdoor clothes after a certain point. Depending on the venue, people may change into lingerie, underwear, towels, robes or other club-appropriate clothing. Always check the specific club’s dress code before going.

On-premise

A venue where sexual activity is permitted. The term is more common in America but appears on some UK event listings.

Off-premise

An event where sexual activity is not permitted at the venue. A social or meet and greet is generally off-premise.

House party

A private lifestyle event held at somebody’s home or another private property. Usually smaller and invitation-based.

Hotel takeover

An organiser books a hotel, a large part of one, or another accommodation venue for a lifestyle weekend or event.

Couples night

An event primarily or exclusively admitting couples. Rules about whether single women or men are admitted vary.

Single male night

A night where single men are permitted, sometimes in greater numbers than on normal club nights.

Bi night

An event specifically welcoming or focusing on bisexual participation. Do not assume attendance means every person there is bisexual or interested in every gender.

Consent, Boundaries and Communication

This is the section that matters more than the vocabulary above it.

Consent

Freely given, informed and reversible agreement. Consent to one thing is not consent to everything else. Consent to somebody last week is not consent tonight. Consent given ten minutes ago can still be withdrawn. Nobody owes an explanation for changing their mind.

Boundaries

Your own limits around what you are and are not comfortable doing or experiencing. A useful boundary is specific enough for everybody involved to understand.

Rules, or agreements

Agreements a couple or group make about how they will behave. People have very different views on the word “rules”, particularly across swinging and polyamorous communities. What matters is that agreements are discussed honestly and everybody genuinely accepts them, rather than somebody agreeing because they feel pressured.

OPP, or one penis policy

A relationship agreement where a woman may be involved with other women but not other men. The term is often used critically, particularly where the restriction has been imposed by one partner rather than genuinely agreed by both. Couples can of course choose whatever boundaries work for them. The important distinction is whether the arrangement is mutual or one-sided.

Hard limit

Something that is absolutely off the table.

Soft limit

Something somebody is unsure about, may approach cautiously, or might consider under particular circumstances.

Veto

An agreement allowing one partner to stop or reject a particular person or situation. Some couples use vetoes comfortably. Others avoid them. If you have one, agree what it actually means before you need to use it.

Safe word

An agreed word signalling that something should stop immediately. More closely associated with kink and BDSM, but some lifestyle couples find one useful too.

Check-in

Pausing before, during or after an experience to make sure everyone is still comfortable. It does not have to be formal. “Still good?” is a check-in.

Aftercare

Looking after and checking in with somebody after an intense or emotional experience. The term comes largely from kink but is useful far beyond it. For couples it can simply mean talking honestly afterwards about what felt good, what felt strange, and whether anything needs discussing.

Compersion

Feeling happiness or pleasure because somebody you care about is enjoying themselves with another person. It is sometimes described as the opposite of jealousy, but that is too simplistic. People can experience compersion and jealousy at exactly the same time.

Jealousy

A completely normal emotional response that can appear in consensual non-monogamy just as it can in monogamy. Feeling jealous does not automatically mean anything has gone wrong. It is information. Talking about it openly usually gives you considerably more to work with than pretending it is not there.

NRE, or new relationship energy

The intense excitement and attention that can come with a new romantic or sexual connection. The term is much more common in polyamory and ENM than traditional swinging, but lifestyle couples increasingly encounter it.

Online and Profile Language

Verified

One of the most misleading words online, because different platforms use it to mean completely different things. It could mean:

• an email address was confirmed
• a mobile number was confirmed
• another member vouched for the profile
• a photograph was manually checked
• photo ID and a live image were compared

Always find out what “verified” means on the platform you are using.

ID verified

Usually means a platform or verification provider has checked identification. How much information is checked, and how much is retained afterwards, still varies.

Age verified

Means the platform has used some form of age-assurance process rather than relying solely on the date of birth a member typed in. Again, look at what process is actually being used.

Vouch, or veri

A recommendation from another lifestyle member saying they have met somebody, or believe them to be genuine. “Veri” is particularly common UK profile language. A vouch can be useful social proof. It is not the same thing as identity or age verification performed by a platform.

Catfish

Someone pretending to be somebody they are not, usually using another person’s photographs or identity.

Fake profile

Broader than a catfish. Can include bots, impersonation accounts, scams, and profiles created primarily to move somebody onto another site or towards a payment.

Timewaster

Someone who spends a long time chatting but never appears willing to actually meet. The label gets thrown around very easily, though. Someone deciding not to meet you is not automatically a timewaster.

Flake

Someone who repeatedly cancels plans, particularly at short notice.

No-show

Someone who agrees to a meet and then simply does not turn up.

Ghosting

Ending communication by disappearing without explanation. Extremely common online and not unique to the lifestyle.

Discreet

Wanting privacy around lifestyle involvement. Nearly everybody is discreet to some degree. The useful question is what it means to that particular person.

Face pic

A photograph clearly showing somebody’s face. Many people keep these private until they are comfortable sharing them.

Private pics, or private album

Photographs hidden from general profile viewing and shared selectively with particular members.

Pic collector

A term used for somebody believed to be requesting private or explicit photographs without genuine interest in meeting. Use the accusation carefully, because you rarely know somebody’s intentions with certainty.

Couples only

A profile, event, group or venue seeking only couples.

The ratio

The balance between different membership types, particularly single men compared with couples and single women. The ratio can significantly affect the atmosphere of a club or an online platform.

Hosting

Being able to invite somebody to your own home, hotel room or other private space.

Travel

Being prepared to go to somebody else’s location rather than hosting.

NSA

No strings attached. Usually means sex without an expectation that it will develop into a romantic relationship. It does not necessarily mean somebody never wants to speak to you again.

DTF

Down to fuck. Blunt shorthand meaning somebody is primarily looking for sex rather than lengthy conversation first. It says nothing about consent to any particular person or activity.

NSFW

Not safe for work. Usually means a photograph, video or message contains adult material you probably do not want appearing on your screen in the office.

HWP

Height-weight proportionate. Mostly American profile shorthand meaning somebody considers their weight proportionate to their height. You may occasionally encounter it on UK platforms.

420 friendly

Usually means somebody is comfortable around cannabis use. It does not automatically mean they personally use it.

PnP, or party and play

Usually refers to sexual activity involving recreational drug use. The meaning and the substances involved can vary. Do not assume that ordinary lifestyle use of the word “play” means PnP.

Sexual Health Language

STI

Sexually transmitted infection. The modern term, generally preferred over STD.

Recently tested

Somebody saying they have recently had sexual-health screening. That statement on its own does not tell you:

• when they tested
• what they were tested for
• what has happened since the test

If it matters to you, have the actual conversation.

Clean

Still sometimes used to mean somebody believes they do not have an STI. Better avoided. People with an infection are not “dirty”, and saying “recently tested” or discussing actual results is considerably clearer.

DDF

Drug and disease free. Still seen online but increasingly dated, for the same reason as “clean”.

Barrier use, or condoms only

Usually means somebody requires condoms or other barriers for particular sexual activities outside their relationship, most commonly penetrative sex. Do not assume what it covers. Ask specifically what precautions they use for which activities.

Bareback

Sex without a condom. The word describes the barrier choice and tells you nothing about testing, contraception or other risk factors.

Fluid bonded

Usually means two people have agreed not to use barriers with one another while potentially using them with other partners. The term does not automatically tell you somebody’s STI status or what precautions they use elsewhere. Ask.

Related Terms That Are Not the Same as Swinging

Polyamory

Having, or being open to, multiple romantic relationships with the knowledge and consent of everyone involved. The emphasis is usually on emotional and romantic relationships rather than primarily shared sexual experiences. Swinging and polyamory can overlap, but they are not interchangeable.

Open relationship

A relationship in which partners agree that one or both may have sexual or romantic experiences with other people. The arrangement can look completely different from couple to couple.

Monogamish

A relationship that is primarily monogamous but allows occasional exceptions or experiences outside the couple.

Polycule

The network of people connected through polyamorous relationships.

Metamour

Your partner’s other partner. You and your metamour do not necessarily have a romantic or sexual relationship with one another.

Triad

A relationship involving three people where each has a relationship with the others. This is a relationship structure, not simply another word for a threesome.

Quad

A polyamorous relationship structure involving four people. Again, different from simply having a foursome.

Comet

A partner or connection you see only occasionally, often because of distance or circumstances, but reconnect with meaningfully whenever your paths cross. Somebody you reliably see at the same annual event could be a comet, but the term is not limited to that situation.

Couple privilege

The ways an established couple can, intentionally or otherwise, give their existing relationship priority over somebody entering later. It is discussed much more in polyamory than swinging, but the concept is useful when thinking about how couples treat a third person.

Relationship anarchy

A philosophy that challenges assumptions about how romantic, sexual and platonic relationships are supposed to be ranked or structured. Part of the wider ENM world rather than specifically swinging.

Kink and BDSM

Communities and practices involving things such as power exchange, bondage, dominance, submission, sadism, masochism and fetishes. There is substantial overlap between kink and lifestyle communities, but taking part in one tells you nothing about somebody’s interest in the other.

Dominant, or Dom

Someone who takes an agreed controlling role within a consensual power-exchange dynamic.

Submissive, or sub

Someone who consensually takes the receiving or yielding role within that dynamic. Being sexually confident or passive does not automatically make somebody dominant or submissive.

Dogging

A particularly British term associated with people meeting for consensual sexual activity in semi-public locations, often car parks. It has its own culture and is not the same thing as swinging, although newspapers regularly blur the two together.

Symbols and Lifestyle Myths

The upside-down pineapple

Probably the most famous supposed swinger symbol. The association is real enough that some people deliberately use it, particularly online, on cruises and at lifestyle events, but it is nowhere near a reliable secret code. Social media has massively exaggerated how universally it is used. If you see an upside-down pineapple in the wild, do not assume anything about the person displaying it.

The key party

The famous 1970s story where everybody puts their car keys in a bowl and partners are randomly assigned at the end of the night. It is much more firmly established in films and popular culture than as a documented lifestyle tradition. It is not how ordinary modern swinger events work.

Secret signals

You will find endless lists online claiming swingers identify each other through particular rings, garden plants, door decorations and clothing. Some individuals genuinely use private symbols. There is no universal secret code. If somebody wants you to know they are in the lifestyle, conversation remains considerably more reliable than analysing their garden.

Words That Carry Baggage

Some terms above are perfectly standard and still land badly. Worth knowing which before you use them in a first message.

Unicorn is normal lifestyle vocabulary but not universally liked. If somebody tells you they dislike being called one, believe them and use whatever they prefer. Unicorn hunting is criticism of behaviour rather than of a couple simply wanting to meet a woman. Third is useful shorthand that can make the additional person sound less important than the established couple. Wife swapping is still understood and increasingly dated. Clean should be avoided for sexual-health status. OPP attracts criticism when the arrangement was announced rather than agreed.

Greedy

Sometimes aimed at bisexual people, at women who enjoy multiple partners, or at anybody seen as wanting “too much”. It tells you more about the person using it than the person receiving it.

The Most Important Term in This Entire Glossary: Ask

You do not need to memorise any of this.

The experienced people in the lifestyle are not necessarily the ones who can recite every abbreviation. They are usually the ones comfortable enough to say:

• “When you say soft swap, what does that include for you?”
• “What does bi-comfortable mean for you?”
• “When you say verified, what verification did you actually complete?”
• “Are you same-room only?”

Those are not awkward questions. They are good communication.

And if somebody becomes uncomfortable simply because you asked them to be clear about boundaries, expectations or consent, that is useful information too.

Frequently Asked Questions

Where to Go Next

If you are completely new to all of this, our beginner’s guide to the swinging lifestyle covers the wider lifestyle more slowly.

If you are deciding where to start meeting people, read our guide to swinger socials versus swingers clubs. If your first club visit is the part making you nervous, what to expect at your first swingers club covers the practical side.

If talking to your partner is where you are stuck, start with how to talk to your partner about swinging. Then read our guides to setting boundaries and swinger etiquette.

And if you are working out which platform to join, how to choose the best swingers site in the UK goes through what actually matters.

If You Want to Look Around

SwingDesire is a UK lifestyle community for verified adults aged 21 and over. Every member completes age and identity verification before full access, and both people on a couple profile verify individually. Creating a profile is free.

Nobody there will expect you to know every word on this page. A fair number of us did not know them when we started either.

Explore SwingDesire

Sean is one of the founders of SwingDesire alongside Sophie. You can read more about why they built it in Meet Sean & Sophie: Our Story.