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.

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.

Dec 19, 2025 · Sit back and enjoy a mega collection of 150+ of the funniest memes shared online over the past month.

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.

Jan 17, 2026 · Adjective hilarious (comparative more hilarious, superlative most hilarious) Very funny; causing great merriment and laughter. Synonyms: see Thesaurus: funny a hilarious joke Do you like …

hi•lar•i•ous•ly, adv. WordReference Random House Unabridged Dictionary of American English © 2026 hi•lar•i•ous (hi lâr′ ē əs, -lar′ -, hī-), adj. arousing great merriment; extremely funny: a hilarious story; …

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.