im·pair

(ĭm-pâr′)

tr.v. im·paired, im·pair·ing, im·pairs

To cause to weaken, be damaged, or diminish, as in quality: an injury that impaired my hearing; a severe storm impairing communications.

[Middle English empairen, from Old French empeirer, from Vulgar Latin *impēiōrāre : Latin in-, causative pref.; see in-² + Latin pēior, worse; see ped- in Indo-European roots.]

im·pair′ment n.

American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

impair

(ɪmˈpɛə)

(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]

imˈpairable adj

imˈpairer n

imˈpairment n

Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014

im•pair

(ɪmˈpɛər)

v.t.

to make or cause to become worse; weaken; damage: habits that impair one's health.

[1250–1300; Middle English empairen to make worse < Middle French empeirer=em- im-¹ + peirer to make worse < Late Latin pējōrāre, v. derivative of Latin pējor worse]

im•pair′er, n.

im•pair′ment, n.

impair

Past participle: impaired
Gerund: impairing

Imperative
impair
impair

Present
I impair
you impair
he/she/it impairs
we impair
you impair
they impair

Preterite
I impaired
you impaired
he/she/it impaired
we impaired
you impaired
they impaired

Present Continuous
I am impairing
you are impairing
he/she/it is impairing
we are impairing
you are impairing
they are impairing

Present Perfect
I have impaired
you have impaired
he/she/it has impaired
we have impaired
you have impaired
they have impaired

Past Continuous
I was impairing
you were impairing
he/she/it was impairing
we were impairing
you were impairing
they were impairing

Past Perfect
I had impaired
you had impaired
he/she/it had impaired
we had impaired
you had impaired
they had impaired

Future
I will impair
you will impair
he/she/it will impair
we will impair
you will impair
they will impair

Future Perfect
I will have impaired
you will have impaired
he/she/it will have impaired
we will have impaired
you will have impaired
they will have impaired

Future Continuous
I will be impairing
you will be impairing
he/she/it will be impairing
we will be impairing
you will be impairing
they will be impairing

Present Perfect Continuous
I have been impairing
you have been impairing
he/she/it has been impairing
we have been impairing
you have been impairing
they have been impairing

Future Perfect Continuous
I will have been impairing
you will have been impairing
he/she/it will have been impairing
we will have been impairing
you will have been impairing
they will have been impairing

Past Perfect Continuous
I had been impairing
you had been impairing
he/she/it had been impairing
we had been impairing
you had been impairing
they had been impairing

Conditional
I would impair
you would impair
he/she/it would impair
we would impair
you would impair
they would impair

Past Conditional
I would have impaired
you would have impaired
he/she/it would have impaired
we would have impaired
you would have impaired
they would have impaired

Collins English Verb Tables © HarperCollins Publishers 2011

ThesaurusAntonymsRelated WordsSynonymsLegend:

Verb	1.	impair - make worse or less effective; "His vision was impaired" damage - inflict damage upon; "The snow damaged the roof"; "She damaged the car when she hit the tree"
	2.	impair - make imperfect; "nothing marred her beauty" mar, deflower, vitiate, spoil damage - inflict damage upon; "The snow damaged the roof"; "She damaged the car when she hit the tree" defile, sully, taint, corrupt, cloud - place under suspicion or cast doubt upon; "sully someone's reputation" blemish, deface, disfigure - mar or spoil the appearance of; "scars defaced her cheeks"; "The vandals disfigured the statue"

impair

verb worsen, reduce, damage, injure, harm, mar, undermine, weaken, spoil, diminish, decrease, blunt, deteriorate, lessen, hinder, debilitate, vitiate, enfeeble, enervate Consumption of alcohol impairs your ability to drive.
better, improve, strengthen, enhance, amend, facilitate, ameliorate

Collins Thesaurus of the English Language – Complete and Unabridged 2nd Edition. 2002 © HarperCollins Publishers 1995, 2002

impair

verb

To spoil the soundness or perfection of:

blemish, damage, detract from, disserve, flaw, harm, hurt, injure, mar, prejudice, tarnish, vitiate.

Translations

يُضْعِف

oslabitpoškodit

skadesvække

beeinträchtigen

détériorer

ront

skaîa, veikja

danneggiare indebolire vista menomata

bojātkaitētpasliktinātiesvājināt

bozmak zarar vermek

削弱损害

impair

[ɪmˈpɛəʳ] VT [+ health, relations] → perjudicar, afectar; [+ sight, hearing] → afectar, dañar; [+ ability] → mermar; [+ judgement] → afectar; [+ visibility] → reducir
impaired hearing → problemas mpl de audición

Collins Spanish Dictionary - Complete and Unabridged 8th Edition 2005 © William Collins Sons & Co. Ltd. 1971, 1988 © HarperCollins Publishers 1992, 1993, 1996, 1997, 2000, 2003, 2005

impair

[ɪmˈpɛə^r] vt

(= damage) → perturber

(= reduce) [+ ability, faculty] → réduire

impair

vt → beeinträchtigen; hearing, sight also → verschlechtern; relations also, health → schaden (+dat)

Collins German Dictionary – Complete and Unabridged 7th Edition 2005. © William Collins Sons & Co. Ltd. 1980 © HarperCollins Publishers 1991, 1997, 1999, 2004, 2005, 2007

impair

[ɪmˈpɛəʳ] vt (health) → danneggiare, pregiudicare; (sight, hearing) → deteriorare, menomare; (visibility) → ridurre; (relations) → deteriorare

impair

(imˈpeə) verb

to damage, weaken or make less good. He was told that smoking would impair his health.

imˈpairment noun

impair

v. dañar; debilitar, desmejorar.

impair

vt dañar, perjudicar; impaired physician médico -ca mf a quien se le dificulta desempeñar su labor debido a enfermedad mental, alcoholismo o drogadicción