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Meaning of impair

im•pair

Pronunciation: (im-pâr'), [key]
— v.t.
  1. to make or cause to become worse; diminish in ability, value, excellence, etc.; weaken or damage: to impair one's health; to impair negotiations.
—v.i.
  1. to grow or become worse; lessen.
—n.
  1. impairment.

im•pair

Pronunciation: (an-per'), [key]
— adj. French.
  1. noting any odd number, esp. in roulette. Cf. pair.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
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