a.
1.
Gay, frohcsome, playful, lively, merry, gamesome, sprightly, frisky, tricksy, rollicking, hilarious, wanton, buxom, prankish, full of play, full of fun.
2.
Jocose, jocular, waggish, humorous, comic, ludicrous, frolicsome, playful, gamesome, facetious, funny, merry, vivacious, lively, sprightly, jocund, mirthful.