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.

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.

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 · hilarious (comparative more hilarious, superlative most hilarious) Do you like Monty Python? I think they're hilarious. Cold Doctor Pell here refused a very considerable fee. He could on …

extremely funny: a hilarious story; a hilarious old movie. boisterously merry or cheerful: a hilarious celebration. cheerful. hi•lar′i•ous•ness, n. 2. lively, jolly, rollicking, high-spirited. 2. sad, serious, …

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.