go stag
if a man goes stag, he goes to a party without a woman

[TahlilGaran] Dictionary of Contemporary English ▲

go stag
[American]
if a man goes stag to a social event, he goes without a woman.
He usually prefers to go stag to parties.

[TahlilGaran] English Idioms Dictionary ▲

go stag
to go to an event by oneself (without a date - usually used for men)
I decided to go stag to the wedding.

[TahlilGaran] English Idioms Dictionary ▲

go stag
v. phr.
1. To go to a dance or party without a companion of the opposite sex.
When Sally turned him down, Tom decided to go stag to the college prom.
2. To participate in a party for men only.
Mrs. Smith's husband frequently goes stag, leaving her at home.

[TahlilGaran] English Idioms Dictionary ▲