significant other

noun

1. Sociology. a person, as a parent or peer, who has great influence on one's behavior and self-esteem.
2. a spouse or cohabiting lover. : SO, S.O.

significant other

noun

1. informal.
   a spouse or lover

Example Sentences

In prepared remarks, Mr Ortberg said he was "hopeful" that the plan, which includes a 35% pay raise over four years, would be approved, while noting that significant other hurdles remain to reset the business.

From BBC

This take on the Buddhist concept of bardo — the state between death and rebirth, often colloquially used to imply simply transition from one state to a significant other — was full of wonder.

From Los Angeles Times

“I just want to leave this journey with a significant other, someone I may or may not be engaged to. But we can pursue our relationship outside the Bachelor bubble.”

From Los Angeles Times

“If he or his mistress had their way, it would be illegal for someone to discover their spouse or significant other was having an affair.”

From Los Angeles Times

We see the repercussions of Carmichael’s actions — the effect they have on his significant other and the work it takes to repair the relationship.

From Los Angeles Times