What is monogamish?

Monogamish means mostly monogamous, not entirely. Wikipedia’s summary describes couples who are “mostly” but not 100% monogamous, with an understanding that allows some amount of sexual activity outside the relationship, and a second Wikipedia entry on non-monogamy describes relationships that are primarily monogamous but allow some flexibility in sexual or romantic experiences outside the primary partnership. The examples it gives are occasional flings, group activities or other consensual experiences that do not threaten the emotional core of the partnership. Those are the sources’ examples, not a rule: the word has no formal definition, and people use it differently.

According to Wikipedia, the writer Dan Savage coined the word in a column published in The Stranger on 20 July 2011, applying it to his own relationship. That attribution is Wikipedia’s account; the column itself is not quoted here, and nothing in this answer depends on it. What matters for a reader is that the word is now ordinary community vocabulary, and that it describes the exceptions rather than the rule: the default is a closed relationship, and the agreed exceptions are the part that is different.

That is what sets it apart from the neighbouring labels. This library describes swinging as recreational, couple-anchored exploration with others, and an open relationship as a mutual agreement to pursue outside connections; polyamory centres multiple loving, ongoing relationships. A monogamish couple may do none of those regularly. The label is mostly about the proportion: the answer on open relationships versus polyamory treats monogamish as mostly closed with agreed exceptions, still open in structure even if the exceptions are rare. Don’t-ask-don’t-tell is a different question again, because it concerns what partners disclose rather than how often anything happens, and a monogamish couple can be fully transparent about every exception.

Because the exceptions are the whole point, they are what the agreement has to name. A couple who call themselves monogamish are usually relying on specifics — what counts as an exception, who it may involve, when it is allowed, what is told afterwards and what the safer-sex terms are — and the word alone settles none of them. “Mostly monogamous” heard by one partner as “occasionally, with someone neither of us knows” and by the other as “only on holiday” is an agreement that has not been made yet. Consent here means both people knowingly choosing the specifics, and it can be revisited at any time.

On whether it works, the evidence is thin and should be read carefully. One 2025 meta-analysis of 35 studies in the Journal of Sex Research found no difference in relationship or sexual satisfaction between monogamous and consensually non-monogamous people, and its subgroup analyses did not vary by agreement type, with monogamish named as one of those types alongside open and polyamorous. That measures satisfaction, not how long relationships last or how any single couple will fare, and it is not a recommendation for or against the arrangement.

The ethical non-monogamy guide covers the term in its “Monogamish & DADT” card, the glossary covers related vocabulary such as DADT, and the answers on DADT, open relationships and polyamory cover the labels it is most often compared with. JoinTheSwing is pre-launch: new registration remains closed until the coordinated native-app release is approved, and the public answers library and free launch list are open meanwhile.