What does "impair" mean?

Impair: To make worse; to diminish in quantity, value, excellence, or strength; to deteriorate; as, to impair health, character, the mind, value. Time sensibly all things impairs. Roscommon. In years he seemed, but not impaired by years. Pope.

Additional senses

  1. 2.To grow worse; to deteriorate. Milton.
  2. 3.Not fit or appropriate. [Obs.]
  3. 4.Diminution; injury. [Obs.]

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