From Longman Dictionary of Contemporary Englishhilarioushi‧lar‧i‧ous /hɪˈleəriəs $ -ˈler-/ ●○○ adjective FUNNYextremely funny a hilarious story► see thesaurus at funny —hilariously adverbGrammarHilarious is not used with ‘very’. You say: The film was absolutely hilarious. ✗Don’t say: The film was very hilarious.
Examples from the Corpus
hilarious• You should read this book - it's hilarious.• And Tim I thought the sausage eaters stuff was hilarious.• But she can be forgiven because this, too, is hilarious.• The Aboriginal rebellion is as tragic as life aboard the Sincerity is hilarious.• They seemed to think this was hilarious.• There are some hilarious and touching stories along the way.• the hilarious BBC comedy series 'Absolutely Fabulous'• Our attempts at dancing were hilarious - we all kept tripping over each other.Origin hilarious (1800-1900) Latin hilarus “cheerful”, from Greek hilaros 