jocularity

Jesting; merriment.

noun

1. The quality of being laughable or comical: comedy, comicality, comicalness, drollery, drollness, farcicality, funniness, humor, humorousness, jocoseness, jocosity, ludicrousness, ridiculousness, wit, wittiness, zaniness. See laughter.
2. A state of joyful exuberance: blitheness, blithesomeness, gaiety, glee, gleefulness, hilarity, jocoseness, jocosity, jocundity, jolliness, jollity, joviality, lightheartedness, merriment, merriness, mirth, mirthfulness. See laughter.

The noun has 3 meanings:

Meaning #1: a feeling facetious merriment
  Synonym: jocundity

Meaning #2: fun characterized by humor
  Synonym: jocosity

Meaning #3: activity characterized by good humor
  Synonyms: jest, joke