Usage examples for gaiety:

• But she darted away in the dance, with the gaiety of a child, leaving him without an answer. "The Chouans" – Honore de Balzac

• Isabella's parents were filled with admiration and astonishment at such a display of grandeur and gaiety combined. "The Exemplary Novels of Cervantes" – Miguel de Cervantes Saavedra

• If Tommy was unnaturally subdued, no one noticed it; his parents were not feeling any great impulse toward gaiety either. "Native Son" – T. D. Hamm

• " Then I hope," said Mr. Longdon with a gaiety slightly strained, " that, contrary to your usual rule, it's a success." "The Awkward Age" – Henry James