WordReference Random House Unabridged Dictionary of American English © 2026
sem•i•for•mal
(sem′ē fôr′məl, sem′ī-),USA pronunciation adj.
- partly formal;
containing some formal elements:a semiformal occasion; semiformal attire.
- semi- + formal 1930–35
'semiformal' also found in these entries (note: many are not synonyms or translations):
Juliet cap
- black tie
- boiled shirt
- cocktail
- dinner clothes
- dinner jacket
- dress shirt
- evening dress
- mess jacket
- shell jacket
- tea gown
- tuxedo