Synonyms of hilarious

1 Syllable

riot, gay, joyous, glad, scream

2 Syllables

jollying, campy, screamer, jovial, witty, rioter, cheerful, larking, merry, merrier, jaunty, merriest, gleeful, grooving, mirthful, zappy, festal, zingy, jollier, zingier, prankish, happy, jauntier, booner, gladdest, joyful, har-har, funnier, tickled, noisy, funniest, chirpy, campiest, laughing, jolly, funny

3 Syllables

riproaring, rollicking, rip-roaring, gladsome, laughable, priceless, convivial, gelastic, humorous, foolheaded, gut-busting, backslapping, knee-slapper, side-splitting, jocular, uproarious, amusing, lively, back-slapping, comical

4 Syllables

entertaining, gamesome, ridiculous, frolicsome, saturnalian, derisory, sidesplitting, conversable, conversible, glad-handering

5 Syllables

exhilarated