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Definitions

hilarious

[hi-lair-ee-uhs, -lar-, hahy-] / hɪˈlɛər i əs, -ˈlær-, haɪ- /
ADJECTIVE
very funny
Synonyms
STRONGEST
amusing comical entertaining humorous laughable lively priceless uproarious
WEAK
convivial exhilarated frolicsome gay gleeful gut-busting happy jocular jolly jovial joyful joyous merry mirthful noisy riot rollicking scream side-splitting witty
Antonyms
STRONGEST
boring grave sad serious solemn tiring tragic unfunny
WEAK
somber

From Roget's 21st Century Thesaurus, Third Edition Copyright © 2013 by the Philip Lief Group.