verb (used with object)
verb (used without object)
Origin of impair1
Examples 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.
Does Ambien impair judgment enough to drive one to violent crime?
The liver is one of the few human organs that regenerates, so having pieces removed usually does not impair function.
Was this enough to impair the pilots but not enough to destroy the airplane in the air?
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.
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.Leonora|Arnold Bennett
Word Origin for impair
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.