your better/other half

(one's) better half

One's significant other (typically one's spouse). Oh, there's my better half! Honey, come say hi to some of my work friends! A: "Wait, Jennie is Ken's better half?" B: "Oh yeah, they've been married for years."
See also: better, half

your other half

or

your better half

COMMON If you refer to your other half or your better half, you mean your husband, wife, or partner. They invited us out to dinner after the election because they said it was time they met my other half. It's a shame my better half isn't here. You'd have someone to gossip with. Note: These expressions are usually used humorously.
See also: half, other

your better half

your husband or wife. humorous
See also: better, half

your better/other ˈhalf

(informal, humorous) your wife or husband: I’ll have to ask my better half about that.
See also: better, half, other