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.

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.

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.

Mar 3, 2025 · Master the word "HILARIOUS" in English: definitions, translations, synonyms, pronunciations, examples, and grammar insights - all in one complete resource.

Nov 6, 2025 · Learned borrowing from Latin hilaris (“cheerful”) +‎ -ous, from Ancient Greek ἱλαρός (hilarós, “cheerful, merry”). hilarious (comparative more hilarious, superlative most hilarious) Do you …

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 …

Factsheet What does the adjective hilarious mean? There are three meanings listed in OED's entry for the adjective hilarious. See ‘Meaning & use’ for definitions, usage, and quotation evidence.

Hilarious definition: Characterized by or causing great merriment.