Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English

English definition of “hilarious”

hilarious

adjective     /hɪˈleə.ri.əs/ US  /-ˈler.i-/
C1 extremely funny and causing a lot of laughter: He didn't like the film at all - I thought it was hilarious.Humour and humorous hilariously     /-li/ adverb Her new book's hilariously funny.Humour and humorous
(Definition of hilarious adjective from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
Focus on the pronunciation of hilarious

Definitions of “hilarious” in other dictionaries

Word of the Day

handout

a document given to students or reporters which contains information about a particular subject

Word of the Day

Blog

Read our blog about how the English language behaves.

Learn More

New Words

Find words and meanings that have just started to be used in English, and let us know what you think of them.

Learn More