The definition of hideous is something that is extremely ugly, terrible or unpleasant to see.(adjective)
An extremely ugly outfit is an example of an outfit that would be described as hideous.
See hideous in Webster's New World College Dictionary
Origin: ME hidous < Anglo-Fr < OFr hidos < hide, hisde, fright
See hideous in American Heritage Dictionary 4
Origin: Middle English
Origin: , variant of hidous
Origin: , from Anglo-Norman
Origin: , from Old French hide, hisde, fear
Origin: , possibly of Germanic origin.
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