vitiate

[ vish-ee-eyt ]
/ ˈvɪʃ iˌeɪt /

verb (used with object), vi·ti·at·ed, vi·ti·at·ing.

to impair the quality of; make faulty; spoil.
to impair or weaken the effectiveness of.
to debase; corrupt; pervert.
to make legally defective or invalid; invalidate: to vitiate a claim.

Origin of vitiate

1525–35; < Latin vitiātus, past participle of vitiāre to spoil, derivative of vitium blemish, vice1 + -ātus -ate1
Related forms
Can be confusedameliorate obviate vitiate
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for vitiation

British Dictionary definitions for vitiation

vitiate

/ (ˈvɪʃɪˌeɪt) /

verb (tr)

to make faulty or imperfect
to debase, pervert, or corrupt
to destroy the force or legal effect of (a deed, etc)to vitiate a contract
Derived Formsvitiable, adjectivevitiation, nounvitiator, noun

Word Origin for vitiate

C16: from Latin vitiāre to injure, from vitium a fault
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for vitiation

vitiate


v.

1530s, from Latin vitiatus, past participle of vitiare "to make faulty, injure, spoil, corrupt," from vitium "fault, defect, blemish, crime, vice" (see vice (n.1)). Related: Vitiated; vitiating.

Online Etymology Dictionary, © 2010 Douglas Harper

Medicine definitions for vitiation

vitiation

[ vĭsh′ē-āshən ]

n.

A change in a process that impairs utility or reduces efficiency.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.