impure.
Not pure
Meaning & usage
Not pure Containing undesired intermixtures
The impure gemstone was not good enough to be made into a necklace, so it was thrown out.
Not pure Unhallowed; defiled by something unholy, either physically by an objectionable substance, or morally by guilt or sin
Not pure Unchaste; obscene (not according to or not abiding by some system of sexual morality)
He was thinking impure thoughts involving a girl from school.
Not pure Having side effects.
an impure method
Where this word comes from
From Middle French impur, from Latin impūrus.
to defile; to pollute
Where this word comes from
From Middle French impur, from Latin impūrus.
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Definitions, grammatical labels, IPA, etymology and examples: Wiktionary contributors, extracted by Kaikki / Wiktextract. Adapted under CC BY-SA 4.0. Selected fields and authored examples are shown; third-party quotations and audio are omitted. See contributor history.
Last enriched 2026-09-10. Definitions are in English. Romanizations are shown when supplied by the source; syllable estimates are omitted for unsupported scripts.