Englishfacetious
adjective
no facetious remarks, please:
flippant, flip, glib, frivolous, tongue-in-cheek, waggish, whimsical, joking, jokey, jesting, jocular, playful, roguish, impish, teasing, arch, mischievous, puckish;
in fun, in jest, witty, amusing, funny, droll, comic, comical, chucklesome, lighthearted, high-spirited, bantering;
archaic frolicsome, sportive;
rare jocose.
▷antonyms serious.