Synonyms of impair in English:

impair


See definition of impair

verb

1‘even one drink can impair driving performance’

SYNONYMS

damage, harm, diminish, reduce, weaken, lessen, decrease, blunt, impede, hinder, mar, spoil, disable

undermine, compromise, threaten

informal foul up, put the kibosh on

rare vitiate

ANTONYMS

improve, enhance