We found 27 dictionaries that define the word hilarious:

General (24 matching dictionaries)

1. hilarious: Merriam-Webster
2. hilarious: Oxford Learner's Dictionaries
3. hilarious: American Heritage Dictionary of the English Language
4. hilarious: Collins English Dictionary
5. hilarious: Vocabulary.com
6. Hilarious, hilarious: Wordnik
7. hilarious: Cambridge Advanced Learner's Dictionary
8. hilarious: Wiktionary
9. hilarious: Webster's New World College Dictionary, 4th Ed.
10. hilarious: The Wordsmyth English Dictionary-Thesaurus
11. hilarious: Infoplease Dictionary
12. Hilarious, hilarious: Dictionary.com
13. hilarious: Cambridge Essential American English Dictionary
14. Hilarious (film): Wikipedia, the Free Encyclopedia
15. Hilarious: Online Plain Text English Dictionary
16. hilarious: Webster's Revised Unabridged, 1913 Edition
17. hilarious: Rhymezone
18. hilarious: AllWords.com Multi-Lingual Dictionary
19. hilarious: FreeDictionary.org
20. hilarious: Mnemonic Dictionary
21. hilarious: TheFreeDictionary.com
22. hilarious: Longman Dictionary of Contemporary English

Business (1 matching dictionary)

23. hilarious: Legal dictionary

Computing (1 matching dictionary)

24. hilarious: Encyclopedia

Slang (1 matching dictionary)

25. The Hilarious: Urban Dictionary

(Note: See hilariously as well.)

Definitions from Wiktionary ( ) ▸ adjective:  Very funny; causing great merriment and laughter. ▸ adjective:  Full of hilarity; merry. Similar: humorous, humourous, uproarious, screaming, hilar, laughy, laugh-out-loud, amusing, chucklesome, thigh-slapping, more... Opposite: serious, somber, grave, solemn, humorless Types: side-splitting, gut-busting, fall-on-the-floor, laugh-out-loud, more... Phrases: That's Hilarious, The Hilarious House of Frightenstein, hilarious person, hilarious situation, opposite of hilarious, more... Colors:     bright yellow,     neon pink,     electric blue,     lime green,     tangerine, more... ▸ Words similar to hilarious ▸ Usage examples for hilarious ▸ Idioms related to hilarious ▸ Wikipedia articles (New!) ▸ Popular nouns described by hilarious ▸ Words that often appear near hilarious ▸ Rhymes of hilarious ▸ Invented words related to hilarious