Source : Webster's Revised Unabridged Dictionary (1913)

Jocularity \Joc`u*lar"i*ty\, n.
   Jesting; merriment.

Source : WordNet®

jocularity
     n 1: a feeling facetious merriment [syn: {jocundity}]
     2: fun characterized by humor [syn: {jocosity}]
     3: activity characterized by good humor [syn: {jest}, {joke}]