Synonyms of impair in English:

impair


See US English definition of impair

See UK English definition of impair

See Spanish definition of afectar

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