arousing great merriment; extremely funny

a hilarious story; a hilarious old movie.

boisterously merry or cheerful

a hilarious celebration.

merry; cheerful.

adjective

grave , serious , somber , tragic , unfunny

adjective

amusing , comical , convivial , entertaining , exhilarated , frolicsome , gay , gleeful , gut-busting , happy , humorous , jocular , jolly , jovial , joyful , joyous , laughable , lively , merry , mirthful , noisy , priceless , riot , rollicking , scream , side-splitting , uproarious , witty , sidesplitting , funny , ludicrous