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American Dictionary of the English Language

Webster's Dictionary 1828

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Vitiate


VI'TIATE, verb transitive [Latin vitio. See vice and Viciate.]

1. To injure the substance or qualities of a thing, so as to impair or spoil its use and value. Thus we say, luxury vitiates the humors of the body; evil examples vitiate the morals of youth; language is vitiated by foreign idioms.

This undistinguishing complaisance will vitiate the taste of readers.

2. To render defective; to destroy; as the validity or binding force of an instrument or transaction. Any undue influence exerted on a jury vitiates their verdict. Fraud vitiates a contract.