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English definition of “hideous”

hideous

adjective     /ˈhɪd.i.əs/
extremely ugly or bad: They've just built some hideous new apartment blocks on the seafront. She wears the most hideous colour combinations you could ever imagine.Not attractive to look atSerious and unpleasant hideousness     /-nəs/ noun [U] Not attractive to look atSerious and unpleasant
(Definition of hideous adjective from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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