The Collaborative International Dictionary of English v.0.48:
Jolliness \Jol"li*ness\, n. Jollity; noisy mirth. --Chaucer. [1913 Webster]WordNet (r) 3.0 (2006):
jolliness n 1: feeling jolly and jovial and full of good humor [syn: jollity, jolliness, joviality]