The meaning of HILARIOUS is marked by or causing hilarity : extremely funny. How to use hilarious in a sentence.

Usage What does hilarious mean? Hilarious means extremely funny, like literally lol funny. Hilarious is most commonly used to describe someone or something (like a joke or a movie) as super funny.

(Definition of hilarious from the Cambridge Academic Content Dictionary © Cambridge University Press)

1. arousing great merriment; extremely funny. 2. boisterously merry or cheerful: feeling hilarious from the champagne.

Definition of hilarious adjective in Oxford Advanced Learner's Dictionary. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more.

Dec 28, 2025 · hilarious (comparative more hilarious, superlative most hilarious) Do you like Monty Python? I think they're hilarious. Cold Doctor Pell here refused a very considerable fee. He could on …

hi•lar•i•ous•ly, adv. WordReference Random House Unabridged Dictionary of American English © 2025 hi•lar•i•ous (hi lâr′ ē əs, -lar′ -, hī-), adj. arousing great merriment; extremely funny: a hilarious story; a …

hilarious meaning, definition, what is hilarious: extremely funny: Learn more.

If something is hilarious, it is extremely funny and makes you laugh a lot. We thought it was hilarious when we first heard about it. He had a fund of hilarious tales on the subject.

hilarious (adjective) hilarious /hɪ ˈ lerijəs/ adjective Britannica Dictionary definition of HILARIOUS [more hilarious; most hilarious] : very funny