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

HILARIOUS definition: 1. extremely funny and causing a lot of laughter: 2. extremely funny and causing a lot of…. Learn more.

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

Definition of hilarious adjective from the Oxford Advanced Learner's Dictionary. extremely funny. Lynn found the whole situation hilarious. Do you know Pete? He's hilarious.

Mar 18, 2026 · Adjective hilarious (comparative more hilarious, superlative most hilarious) Very funny; causing great merriment and laughter. Synonyms: see Thesaurus: funny a hilarious joke Do …

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. Much less commonly, it used to mean …

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 is an adjective that describes a high degree of humor. Things that are funny can cause you to smile or giggle, but when something is hilarious, it causes you to laugh out loud.

Synonyms for HILARIOUS: funny, humorous, comedic, amusing, comical, ridiculous, comic, hysterical; Antonyms of HILARIOUS: lame, serious, humorless, earnest, unfunny, solemn, tragic, severe

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