noun
gaiety
GAY-uh-tee/ˈɡeɪəti/
A feeling or atmosphere of cheerful liveliness.
Gaiety fills the air as the women laugh and dance.

Etymology
Gaiety names the state of being gai—cheerful or merry. It preserves the joyful sense also found in older English gay, making festive pleasure central to the word.
In context
some dancing, others singing, others playing the various instruments already mentioned. In short, it seemed as though mirth and gaiety were frisking and gambolling all over the meadow.
More examples
- There is an unexpected note of gaiety in his voice.
- Bright scarves add a touch of gaiety to her winter outfits.
- Her forced gaiety cannot hide her worry about tomorrow.
- The band's playful music brings gaiety to the crowded square.
Forms
gaiety