Definition of "jocularity"

It should seem he had that day been in a humour for jocularity and merriment, and upon such occasions I never knew a man laugh more heartily.

1791, James Boswell, “(please specify the year)”, in The Life of Samuel Johnson, LL.D. […], London: […] Henry Baldwin, for Charles Dilly, […], page 494

[…] Cristal Nixon at that moment rode up to them, and said, with an affectation of jocularity which sat very ill upon his sullen features, […]

1824 June, [Walter Scott], “chapter 5”, in Redgauntlet, […], volume III, Edinburgh: […] [James Ballantyne and Co.] for Archibald Constable and Co.; London: Hurst, Robinson, and Co., page 156

All were armed with pistols, and there was a small armoury of rifles against a wall. “Guns,” I said with fearful jocularity, “in a holy place?”

1980, Anthony Burgess, chapter 74, in Earthly Powers, London: Hutchinson

Madouc was neither pleased nor impressed by Prince Bittern’s mannerisms, and remained pointedly unresponsive to his lame jocularities.

1989, Jack Vance, chapter 4, in Madouc