black-tie
1. [ adjective ] moderately formal; requiring a dinner jacket
Synonyms: semiformal semi-formal
Examples:

"he wore semiformal attire" "a black-tie dinner"

Related terms: formal
2. [ adjective ] moderately formal; requiring a dinner jacket
Synonyms: semi-formal semiformal
Examples:

"he wore semiformal attire" "a black-tie dinner"

Related terms: formal
Similar spelling:   black_tie
  blackwater
  black_kite
  blackout
  blacktail
  blackseed
  blackhead
  Blacketer
  black_tea
  Black_Tai
  black_out
  black_cat
  Blackstone
  Blackstock
  black_widow
  black_stork
  black_duck
  Black_Death