The definition of hilarious is someone or something that is very, very funny.
(adjective)An example of hilarious is a movie that you simply cannot stop laughing at.
See hilarious in Webster's New World College Dictionary
adjective
Origin: < L hilaris, hilarus < Gr hilaros, cheerful, merry (see silly) + -ous
Related Forms:
See hilarious in American Heritage Dictionary 4
adjective
Origin:
Origin: Latin hilaris, cheerful; see hilarity
Origin: + -ious
.Related Forms:
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