impaired

[im-paird]
adjective
1.
weakened, diminished, or damaged: impaired hearing; to rebuild an impaired bridge.
2.
functioning poorly or inadequately: Consumption of alcohol results in an impaired driver.
3.
deficient or incompetent (usually preceded by an adverb or noun): morally impaired; sports-impaired.

Origin:
impair + -ed2

unimpaired, adjective
Dictionary.com Unabridged

impair

[im-pair]
verb (used with object)
1.
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)
2.
to grow or become worse; lessen.
noun
3.
Archaic. impairment.

Origin:
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

impairable, adjective
impairer, noun
impairment, noun
nonimpairment, noun
preimpairment, noun
self-impairable, adjective
self-impairing, adjective
unimpairable, adjective


1. See injure.


1. repair.
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
impair (ɪmˈpɛə)
 
vb
(tr) to reduce or weaken in strength, quality, etc: his hearing was impaired by an accident
 
[C14: from Old French empeirer to make worse, from Late Latin pējorāre, from Latin pejor worse; see pejorative]
 
im'pairable
 
adj
 
im'pairer
 
n
 
im'pairment
 
n

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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Etymonline
Word Origin & History

impair
late 14c., earlier ampayre, apeyre (c.1300), from O.Fr. empeirier, from V.L. *impejorare "make worse," from L. in- "into" + L.L. pejorare "make worse," from pejor "worse." In ref. to driving under the influence of alcohol, first recorded 1951 in Canadian Eng.
Online Etymology Dictionary, © 2010 Douglas Harper
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Example sentences
Methods of dealing with impaired nurses are becoming less punitive.
Even as colleges embrace diversity, simple solutions to help the visually
  impaired are overlooked.
However by global convention loans are not marked to market, but carried at
  cost and impaired gradually.
The best known service dogs are guides for the visually impaired.
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