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impair

[an-per] /ɛ̃ˈpɛr/
adjective, French.
1.
noting any odd number, especially in roulette.
Compare pair.
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2016.
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British Dictionary definitions for most-impair

impair

/ɪmˈpɛə/
verb
1.
(transitive) to reduce or weaken in strength, quality, etc: his hearing was impaired by an accident
Derived Forms
impairable, adjective
impairer, noun
impairment, noun
Word Origin
C14: from Old French empeirer to make worse, from Late Latin pējorāre, from Latin pejor worse; see pejorative
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
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Word Origin and History for most-impair

impair

v.

late 14c., earlier ampayre, apeyre (c.1300), from Old French empeirier (Modern French empirer), from Vulgar Latin *impeiorare "make worse," from assimilated form of in- "into, in" (see in- (2)) + Late Latin peiorare "make worse" (see pejorative). In reference to driving under the influence of alcohol, first recorded 1951 in Canadian English. Related: Impaired; impairing.

Online Etymology Dictionary, © 2010 Douglas Harper
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6
7
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