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im·pair

impair

 
 
pronunciation:
ihm peIr
part of speech: verb
inflections: impairs, impairing, impaired
definition: to lessen the strength or ability of; damage.
Old age impaired his vision and hearing.
synonyms:
cripple, damage, diminish, harm, hurt, injure, weaken
antonyms:
enhance, improve, repair
similar words:
disable, hinder, lessen, wear
derivation: impairment (n.)