The definition of a tuxedo is formal attire for men including a dinner jacket and matching pants.
Designating or requiring attire that is less than strictly formal but not informal
moderately formal; requiring a dinner jacket
Find another word for black-tie. In this page you can discover 5 synonyms, antonyms, idiomatic expressions, and related words for black-tie, like: dinner-jacket, tux, tuxedo, semiformal and semi-formal.