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Impure

1. Not pure; not clean; dirty; foul; filthy; containing something which is unclean or unwholesome; mixed or impregnated extraneous substances; adulterated; as, impure water or air; impure drugs, food, etc.

2. Defiled by sin or guilt; unholy; unhallowed; said of persons or things.

3. Unchaste; lewd; unclean; obscene; as, impure language or ideas. Impure desires.

4. Not purified according to the ceremonial law of Moses; unclean.

5. Not accurate; not idiomatic; as, impure Latin; an impure style.

Origin: L. Impurus; pref. Im- not _ purus pure: cf. F. Impur. See pure.