'Wittiness' definitions:

Definition of 'wittiness'

From: WordNet
noun
A message whose ingenuity or verbal skill or incongruity has the power to evoke laughter [syn: wit, humor, humour, witticism, wittiness]

Definition of 'Wittiness'

From: GCIDE
  • Wittiness \Wit"ti*ness\, n. The quality of being witty. [1913 Webster]