In other words, researchers were able to prove that THC should, technically, impair driving, but not that it does.
The liver is one of the few human organs that regenerates, so having pieces removed usually does not impair function.
Does Ambien impair judgment enough to drive one to violent crime?
Formerly to impair the morals was a minor was a punishable offense.
Was this enough to impair the pilots but not enough to destroy the airplane in the air?
When the crystals accumulate so as to impair the cell, the tube is slipped off and a new one put on.
And he went about it with a zest that knew no flagging, with a relish that nothing could impair.
Slight fatigue from typewriting will not, however, impair efficiency in a different sort of work.
After a silence Buckhurst said: “All that may be, madame, yet not impair your creed.”
All compromise of the truth or any measures that impair testimony to God are to be avoided.
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.