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

• Lexulous
• Wordscraper
• Wordosaur

v. Simple past tense and past participle of vitiate.

adj. ruined in character or quality

adj. impaired by diminution

"I have called vitiated air (§ 29), with 4 parts of our fire-air, and placed the bottle, inverted and open, in a vessel which was also filled with a solution of liver of sulphur."

vitiated    vitiates    vitiating   

change    modify    alter   

vice    vicious   

annul    degrade    corrupt    impair    spoil