verb
ADVERB
▪ dramatically , greatly , markedly , seriously , severely , significantly , substantially
▪
a defect that significantly ~s the safety of a car
▪ mildly
▪ permanently
PHRASES
▪ severely ~ed
▪
Her liver function was severely ~ed.
Impair is used with these nouns as the object: ↑ ability , ↑ circulation , ↑ effectiveness , ↑ hearing , ↑ immunity , ↑ judgement , ↑ mobility , ↑ performance , ↑ quality , ↑ vision