The definition of horrid is something that is unpleasant, disagreeable or terrible.(adjective)
An example of something that would be described as horrid is the taste of spoiled milk.
See horrid in Webster's New World College Dictionary
Origin: L horridus < horrere, to bristle, shake, be afraid < IE base *ĝhers-, to bristle > gorse
See horrid in American Heritage Dictionary 4
Origin: Alteration (influenced by Latin horridus, bristling)
Origin: of Middle English horred
Origin: , past participle of horren, to bristle
Origin: , from Latin horrēre, to tremble, bristle.
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