Jocular

From Latin iocularis, from ioculus ("a little jest"), diminutive of iocus ("a jest").

Full definition of jocular

(formal) Humorous, amusing or joking.He was in a jocular mood all day.All we had was a short and jocular conversation

1865, Horatio Alger, , chapter IV:From the tone of the speaker, the last words might be understood to be jocular.
1896, H. G. Wells, , chapter 15:Sometimes he would notice it, pat it, call it half-mocking, half-jocular names, and so make it caper with extraordinary delight.
1910, Stephen Leacock, :Then papa began to get very tired of Jones, and fidgeted and finally said, with jocular irony, that Jones had better stay all night, they could give him a shake-down.