Polyamory glossary: throuple, metamour, polycule and more

Polyamory comes with its own vocabulary, and new words can feel like a test you did not know you were taking. They are not. Most terms were coined by polyamorous people trying to describe their lives more accurately, and meanings shift a little from one community to another. This glossary covers the words you will meet most often on profiles and in conversation, starting with four that cause the most questions: throuple, metamour, polycule and relationship anarchy.

New to the whole idea? Read what does polyamory mean? and what is a polyamorous relationship? first, then come back here when a word trips you up.

Throuple

A throuple is three people who are all in a romantic relationship with each other. The word blends three and couple, and it usually describes a group that sees itself as a unit: they may live together, share holidays and introduce themselves as a three. Many throuples are closed, meaning nobody dates outside the group, but that is a choice rather than part of the definition.

Throuple and triad are often used interchangeably. Some people prefer triad because it sounds less like a joke headline, and some use triad for three people who are all connected but also have other partners. If a match uses either word, ask what it means for them in practice.

In a profile: "We are a closed throuple and not dating right now" and "Two of us are in a throuple; I also see someone outside it" describe very different situations. Spell out which applies.

A word of care: many singles have had uncomfortable experiences with couples looking for a third person to fit into a ready-made throuple. If that is what you want, say so openly, accept that the third person will have their own needs, and read our couples guide before you start.

Read the full guide: what is a throuple?

Metamour

A metamour is your partner's other partner, someone you share a partner with but are not dating yourself. If Sam dates both Alex and Jo, Alex and Jo are metamours. The word combines the Greek meta, meaning beside or beyond, with the French amour.

Metamour relationships vary enormously. Some metamours become close friends, holiday together and help with each other's children. Others say a polite hello at birthdays and leave it there. Both are healthy when they suit the people involved. What matters is courtesy, honesty and not using a shared partner as a messenger.

Related terms: a telemour is a metamour's other partner, two steps away. Kitchen-table polyamory describes networks where metamours are comfortable together; parallel polyamory describes networks where they rarely meet.

For practical advice on metamour etiquette, see building a polycule.

Read the full guide: what is a metamour?

Polycule

A polycule is the whole network of people connected through polyamorous relationships, including people who never date each other directly. The word comes from polyamory and molecule, because drawn on paper the network looks like a chemistry diagram: people as atoms, relationships as bonds.

A polycule can be as small as a V, where one person has two partners, or large enough to need a shared calendar and a group chat. Some polycules are tight-knit and do a lot together; others are loose networks that only meet at the occasional party. Nobody votes on membership; it is simply a way to describe who is connected to whom.

In a profile: describing your polycule in a sentence helps matches understand what they are joining. "I have a nesting partner and a long-distance partner; my polycule is friendly but spread out" tells a reader far more than a list of labels.

Read the full guide: what is a polycule?

Relationship anarchy

Relationship anarchy is a philosophy rather than a shape. Relationship anarchists avoid ranking relationships by category. Instead of a hierarchy where romantic partners automatically come before friends, each relationship is built by agreement between the people in it, whether it involves romance, sex, living together, raising children or none of these.

In practice, that can mean a close friendship given as much priority as a romantic one, or a romantic relationship with no expectation of moving in. Relationship anarchists still make commitments; they just make them deliberately rather than by default. The term is usually traced to a 2006 essay by Andie Nordgren, and it overlaps with, but is not identical to, non-hierarchical polyamory.

In a profile: "I practise relationship anarchy" can confuse people who have never met the term. Add a line on what it means for you, for example "I do not rank partners, and I value friendships as much as romance."

Read the full guide: relationship anarchy.

Other words you will see

Polyamory: Having, or being open to, more than one loving relationship at a time, with everyone's knowledge and consent.
Nesting partner: A partner you live with. Not necessarily a primary partner, though often both.
Primary and secondary: Labels in hierarchical polyamory for a partner whose relationship takes priority, and for other partners. See hierarchical vs non-hierarchical polyamory.
Hinge: The person at the centre of a V, dating two people who are not dating each other.
V: Three people where one person has two partners who are metamours to each other.
Triad: Three people who are all in relationships with each other, closed or open. See triad relationships.
Quad: Four people connected by relationships, often two couples.
Solo polyamory: Polyamory without seeking a nesting or primary partner. See solo polyamory.
Kitchen-table polyamory: A style where partners and metamours are comfortable spending time together. See kitchen table vs parallel polyamory.
Parallel polyamory: A style where relationships run side by side with little contact between metamours.
Compersion: Feeling glad that a partner is happy with someone else. See jealousy and compersion.
New relationship energy (NRE): The rush of excitement at the start of a relationship, which can pull attention from existing partners.
Veto: An agreement that one partner can ask another to end a relationship. Controversial, and discussed in the hierarchy guide.
Unicorn: Slang for a single person, usually a bisexual woman, sought by a couple to join them. Many singles find the search off-putting when it treats them as an accessory. See unicorn in polyamory.
Polysaturated: Having as many relationships as you have time and energy for right now.
Relationship escalator: The expected sequence of dating, exclusivity, moving in, marriage and children. Solo polyamorous people and relationship anarchists often step off it.
Polygamy: Marriage to more than one spouse. See polyamory vs polygamy.
Polyamory flag: The pride flag for polyamory. See the polyamory flag.
Monogamish: A mostly monogamous couple with occasional, agreed exceptions.

Using the words well

For deeper reading, try our polyamory books list, how polyamorous couples date, relationship rules that help, finding a poly-friendly therapist and polyamory on screen. Comparing sites? See what each dating site includes without paying.

Labels are tools, not tests. They help you find people whose lives fit with yours, but a word on its own never explains everything. Two people who both say "non-hierarchical" may still mean different things about holidays, money or overnight stays. When you meet someone new, ask what their words mean in practice, and offer the same courtesy back.

It also helps to keep your own profile readable. One or two well-chosen terms, followed by a plain sentence about your week, will land better than a string of jargon. Our profile tips show examples, and the relationship structures guide explains how the shapes fit together.

Frequently asked questions

What is the difference between a throuple and a triad?

Often none. Both describe three people who are all in a relationship together; some people use throuple for a closed unit and triad more broadly.

What is a metamour?

Your partner's other partner: someone you share a partner with but are not dating yourself.

What does polycule mean?

The whole network of people linked by polyamorous relationships, including people who never date each other directly.

Is relationship anarchy the same as polyamory?

No. Relationship anarchy is a philosophy of not ranking relationships by category. Many relationship anarchists are polyamorous, but the ideas are separate.

What is a telemour?

Your metamour's other partner, two steps away from you in the network.

Do I need to use these words on my profile?

No. A plain description of your relationships is always clear. Terms help when you explain what they mean for you.