— hilariously , adv. — hilariousness , n.
/hi lair"ee euhs, -lar"-, huy-/ , adj.
1. arousing great merriment; extremely funny: a hilarious story; a hilarious old movie.
2. boisterously merry or cheerful: a hilarious celebration.
3. merry; cheerful.
[ 1815-25; hilar ( is ), hilar ( us ) cheerful ( hilarós ) + -IOUS ]
Syn. 2. lively, jolly, rollicking, high-spirited.
Ant. 2. sad, serious, solemn.