HILARIOUS definition: arousing great merriment; extremely funny. See examples of hilarious used in a sentence.

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.

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

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

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

Dec 28, 2025 · In order to turn the minds of hilarious guests to seriousness, they would start singing a responsive song, the subject of which was death and the earnestness of life. Rounding up the animals …

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.

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 …