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adj. im·pur·er, im·pur·est
1. Not pure or clean; contaminated.
2. Not purified by religious rite; unclean.
3. Immoral or sinful: impure thoughts.
4. Mixed with another, usually inferior substance; adulterated.
5. Being a composite of more than one color or mixed with black or white.
6. Deriving from more than one source, style, or convention; eclectic: an impure art form.

im·pure′ly adv.
im·pure′ness n.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.impureness - the condition of being impure
condition, status - a state at a particular time; "a condition (or state) of disrepair"; "the current status of the arms negotiations"
adulteration, debasement - being mixed with extraneous material; the product of adulterating
admixture, alloy - the state of impairing the quality or reducing the value of something
contamination, taint - the state of being contaminated
dirtiness - the state of containing dirty impurities
putridity - the state of being putrid
pollution - undesirable state of the natural environment being contaminated with harmful substances as a consequence of human activities