- The definition of hideous is something that is extremely ugly, terrible or unpleasant to see.
An extremely ugly outfit is an example of an outfit that would be described as hideous.
Origin: Middle English hidous from Anglo-French from Old French hidos from hide, hisde, fright
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- Repulsive, especially to the sight; revoltingly ugly. See Synonyms at ugly.
- Offensive to moral sensibilities; despicable.
Origin: Middle English, variant of hidous, from Anglo-Norman, from Old French hide, hisde, fear, possibly of Germanic origin.
- hidˌe·osˈi·ty noun
- hidˈe·ous·ly adverb
- hidˈe·ous·ness noun