impair

1
[ im-pair ]
/ ɪmˈpɛər /

verb (used with object)

to make or cause to become worse; diminish in ability, value, excellence, etc.; weaken or damage: to impair one's health; to impair negotiations.

verb (used without object)

to grow or become worse; lessen.

noun

Archaic. impairment.

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Origin of impair

1
1250–1300; Middle English empairen, empeiren to make worse < Middle French empeirer, equivalent to em- im-1 + peirer to make worse < Late Latin pējōrāre, equivalent to Latin pējōr-, stem of pējor worse + -ā- thematic vowel + -re infinitive suffix; cf. pejorative

OTHER WORDS FROM impair

Definition for impair (2 of 2)

impair2
[ an-per ]
/ ɛ̃ˈpɛr /

adjective French.

noting any odd number, especially in roulette.
Compare pair.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020

Example sentences from the Web for impair

British Dictionary definitions for impair

impair
/ (ɪmˈpɛə) /

verb

(tr) to reduce or weaken in strength, quality, etchis hearing was impaired by an accident

Derived forms of impair

impairable, adjectiveimpairer, nounimpairment, noun

Word Origin for impair

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