This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

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• Wordscraper
• Wordosaur

v. Third-person singular simple present indicative form of vitiate.

"And as in a mathematical demonstration an error in the original number disturbs the whole calculation which follows, this fundamental uncertainty about the word vitiates all the applications of it."

vitiated    vitiates    vitiating   

change    modify    alter   

vice    vicious   

annul    degrade    corrupt    impair    spoil