Monogamish

A mostly monogamous relationship that allows occasional, agreed sexual experiences outside the couple.

Monogamish describes a relationship that is largely monogamous but allows for rare or limited sexual activity with others, by agreement. It sits between strict monogamy and a fully open relationship. Couples might allow outside experiences only on certain occasions, such as while travelling, or only together. As ever, the defining feature is that both partners know and consent to the arrangement.