释义 
		[ im-pair  ] SHOW IPA 
/ ɪmˈpɛər / PHONETIC RESPELLING 
SEE SYNONYMS FOR impair  ON THESAURUS.COM
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. 
Origin of impair  1 1250–1300; Middle English empairen, empeiren  “to make worse,” from Middle French empeirer,  equivalent to em-  im-1  + peirer  “to make worse,” from Late Latin pējōrāre,  equivalent to Latin pējōr-,  stem of pējor  “worse” + -ā-  thematic vowel + -re  infinitive suffix; cf. pejorative
ANTONYMS FOR impair SEE ANTONYMS FOR impair  ON THESAURUS.COM
synonym study for impair 1 . See injure. 
OTHER WORDS FROM impair im·pair·a·ble,  adjective im·pair·er,  noun im·pair·ment,  noun non·im·pair·ment,  noun 
pre·im·pair·ment,  noun self-im·pair·a·ble,  adjective self-im·pair·ing,  adjective un·im·pair·a·ble,  adjective 
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Words nearby impair  impact parameter, impact printer, impact structure, impact wrench, impact zone, impair , impaired, impairment, impala, impale, impalpable
Definition for  impair  (2 of 2) [ an -per   ] SHOW IPA 
/ ɛ̃ˈpɛr / PHONETIC RESPELLING 
adjective  French . noting any odd number, especially in roulette. 
Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020
Example sentences from the Web for impair Formerly to impair  the morals was a minor was a punishable offense.
Holy Homophobia, Batman! A Queer Reading of the Dark Knight | Rich Goldstein| July 26, 2014| DAILY BEAST
In other words, researchers were able to prove that THC should, technically, impair  driving, but not that it does.
The Truth About Driving While Stoned | Abby Haglage| June 12, 2014| DAILY BEAST
Does Ambien impair  judgment enough to drive one to violent crime?
Is the ‘Ambien Defense’ Total Bullsh*t? | Janelle Dumalaon| April 15, 2014| DAILY BEAST
The liver is one of the few human organs that regenerates, so having pieces removed usually does not impair  function.
Jobs’s Unorthodox Treatment | Sharon Begley| October 6, 2011| DAILY BEAST
Was this enough to impair  the pilots but not enough to destroy the airplane in the air?
How Flight 447 Fell Intact From the Sky | Clive Irving| July 2, 2009| DAILY BEAST
I have a certain standing in the community which even Mrs. Carter's madness has not seemed to impair  seriously.
Harriet and the Piper | Kathleen Norris
The proposed provision excludes slaves, not citizens, whose rights it will not, and cannot impair .
American Eloquence, Volume II. (of 4) | Various
It will impair  our standing with other States and the world.
The Papers And Writings Of Abraham Lincoln, Volume One | Abraham Lincoln
This may have baffled some hopes, and in some degree qualified his happiness, but did not impair  his virtues.
The Life of Francis Marion | William Gilmore Simms
Nothing—no pertness, no audacity, no silliness, no affectation—could impair  the extraordinary charm.
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British Dictionary definitions for  impair verb (tr)  to reduce or weaken in strength, quality, etc his hearing was impaired by an accident 
Derived forms of impair impairable , adjective impairer , noun impairment , 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
Words related to impair reduce, mar, decrease, worsen, debilitate, lessen, damage, hurt, tarnish, prejudice, spoil, destroy, diminish, blunt, undermine, weaken, ding, invalidate, cheapen, blemish