gaiety
noun
1 there was unusual gaiety in her manner:
cheerfulness, cheer, light-heartedness, merriment, glee, gladness, happiness, joy, joyfulness, joyousness, delight, pleasure, high spirits, good spirits, good humor, jollity, jolliness, hilarity, mirth, joviality, exuberance, elation, exultation, euphoria, jubilation;
liveliness, vivacity, animation, effervescence, levity, buoyancy, sprightliness, zest, zestfulness;
French joie de vivre;
informal chirpiness, bounce, pep, zing;
literary gladsomeness, blitheness, blithesomeness;
rare gayness.
▷antonyms misery.