significant other

significant other

n.

1. A person, such as a spouse or lover, with whom one shares a long-term sexual relationship.

2. A person, such as a family member or close friend, who is important or influential in one's life: "The most important variable in successful smoking cessation is the support of significant others in the new nonsmoker's life" (Carolyn Reuben).

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significant other

n

US informal a spouse or lover

Thesaurus

Noun

1.

significant other - a person (not necessarily a spouse) with whom you cohabit and share a long-term sexual relationship domestic partner, spousal equivalent, spouse equivalent individual, mortal, person, somebody, someone, soul - a human being; "there was too much for one person to do" lover - a significant other to whom you are not related by marriage better half, married person, partner, spouse, mate - a person's partner in marriage