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

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

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) …

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.

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

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 …

extremely funny, causing great amusement; hilarious situations often involve unexpected twists or absurdities. People may laugh uncontrollably when something is hilarious.

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

Hilarious definition: Characterized by or causing great merriment.