Source : Webster's Revised Unabridged Dictionary (1913)

Jocundity \Jo*cun"di*ty\, n. [L. jocunditas jucunditas. See
   {Jocund}, and cf. {Jucundity}.]
   The state or quality of being jocund; gayety; sportiveness.

Source : WordNet®

jocundity
     n : a feeling facetious merriment [syn: {jocularity}]