- (dated, uncountable) The state of being happy or merry.
- 1963, Margery Allingham, chapter 2, in The China Governess:
- Now that she had rested and had fed from the luncheon tray Mrs. Broome had just removed, she had reverted to her normal gaiety. She looked cool in a grey tailored cotton dress with a terracotta scarf and shoes and her hair a black silk helmet.
- There was much gaiety at the ball.
- The decorations added greatly to the gaiety of the room.
- (dated, countable) Merrymaking or festivity.
- 1863, Sheridan Le Fanu, The House by the Churchyard:
- And he would tell her all sorts of wonders, old-world gaieties, long before she was born; and how finely the great Mr. Handel played upon the harpsichord in the Music Hall, and how his talk was in German, Latin, French, English, Italian, and half-a-dozen languages besides […]
- (state of being happy): gayness
state of being happy