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English definition of “hilarious”

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adjective uk   /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.
adverb uk   /-li/ us  
Her new book's hilariously funny.
(Definition of hilarious from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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