/ ˈhɪdiəs; NAmE / adjective
very ugly or unpleasant
SYN revolting :
a hideous face / building / dress
Their new colour scheme is hideous!
a hideous crime
The whole experience had been like some hideous nightmare.
► hid·eous·ly adverb :
His face was hideously deformed.
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WORD ORIGIN
Middle English : from Old French hidos , hideus , from hide , hisde fear, of unknown origin.