tr.v., -at·ed, -at·ing, -ates.

1. To reduce the value or impair the quality of.
2. To corrupt morally; debase.
3. To make ineffective; invalidate. See synonyms at corrupt.

[Latin vitiāre, vitiāt-, from vitium, fault.]

vitiable vi'ti·a·ble (vĭsh'ē-ə-bəl) adj.
vitiation vi'ti·a'tion n.
vitiator vi'ti·a'tor n.

verb

1. To spoil the soundness or perfection of: blemish, damage, detract from, disserve, flaw, harm, hurt, impair, injure, mar, prejudice, tarnish. See better/worse, help/harm/harmless.
2. To ruin utterly in character or quality: animalize, bastardize, bestialize, brutalize, canker, corrupt, debase, debauch, demoralize, deprave, pervert, stain, warp. See clean/dirty, help/harm/harmless.
3. To put an end to, especially formally and with authority: abolish, abrogate, annihilate, annul, cancel, invalidate, negate, nullify, set aside, void. Law extinguish. See continue/stop/pause.

v

Definition: cancel
Antonyms: schedule, set up

v

Definition: hurt, corrupt
Antonyms: aid, assist, help, protect, save

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(vish′ē āt)
v

To weaken; to make void or voidable.

This entry contains information applicable to United States law only.

To impair or make void; to destroy or annul, either completely or partially, the force and effect of an act or instrument.

Mutual mistake or fraud, for example, might vitiate a contract.

IN BRIEF: To lower the quality. Also: To destroy the force of.

You will vitiate the guarantee if you drive the car in an unsafe manner to cause a crash.

Dansk (Danish)
v. tr. - ødelægge, fordærve

Nederlands (Dutch)
bederven, ongeldig maken

Français (French)
v. tr. - (gén, Jur) vicier, annuler, rendre nul

Deutsch (German)
v. - hinfällig machen, beeinträchtigen

Ελληνική (Greek)
v. - μολύνω, καταστρέφω, ακυρώνω, καθιστώ ελαττωματικό, υποβαθμίζω, νοθεύω

Italiano (Italian)
corrompere

Português (Portuguese)
v. - viciar, corromper, invalidar (Jur.)

Русский (Russian)
портить, лишать силы, делать недействительным

Español (Spanish)
v. tr. - viciar, contaminar, corromper

Svenska (Swedish)
v. - fördärva, förvanska, göra ogiltig

中文（简体） (Chinese (Simplified))
使腐败, 使堕落, 污染

中文（繁體） (Chinese (Traditional))
v. tr. - 使腐敗, 使墮落, 污染

한국어 (Korean)
v. tr. - ~을 손상시키다, 오염시키다, 무효로 하다

日本語 (Japanese)
v. - 価値を低下させる, よごす, だめにする

العربيه (Arabic)
‏(فعل) افسد, اهان, لوث, الغى ( قانون)‏

עברית (Hebrew)
v. tr. - ‮החליש איכות או יעילות של, השפיל, זיהם, קלקל, פגם, ערער, השחית‬

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