Vitiate definitions

vĭsh'ē-āt'
To vitiate is to corrupt, invalidate or weaken morally.

When you bribe a policeman, this is an example of when you vitiate the policeman.

When you make a legal contract invalid, this is an example of a time when you vitiate the contract.

When you give an underage person a drink, this an example of when you vitiate a child.

verb
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To reduce the value or quality of; impair or spoil.
verb
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To corrupt morally; debase.
verb
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To make ineffective (a contract or legal stipulation, for example); invalidate.
verb
2
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To make imperfect, faulty, or impure; spoil; corrupt.
verb
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To weaken morally; debase; pervert.
verb
1
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To make (a contract, or other legal instrument) ineffective; invalidate.
verb
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To interfere with; to impair; to render null and void; to cause to have no effect.
verb
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To invalidate either partially or completely.
verb
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To corrupt morally.
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To spoil, make faulty; to reduce the value, quality, or effectiveness of something.
verb
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verb
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(archaic) To violate, to rape.
verb
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To make something ineffective, to invalidate.
verb
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Origin of vitiate

From vitiātus, the perfect passive participle of Latin vitiō (“damage, spoil"), from vitium (“vice").