Impair

v. t.	1.	To make worse; to diminish in quantity, value, excellence, or strength; to deteriorate; as, to impair health, character, the mind, value. [imp. & p. p. Impaired ; p. pr. & vb. n. Impairing.] Time sensibly all things impairs. - Roscommon. In years he seemed, but not impaired by years. - Pope.
	1.	To grow worse; to deteriorate.
a.	1.	Not fit or appropriate.
n.	1.	Diminution; injury.

Verb	1.	impair - make worse or less effective; "His vision was impaired"
	2.	impair - make imperfect; "nothing marred her beauty" Synonyms: mar, deflower, vitiate, spoil

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