1. in a way that is not pure; with contamination or foreign substances mixed in
2. in a morally corrupt or sinful manner
Usage: formal

Examples

• The water was impurely filtered, leaving traces of sediment.
• The metal was impurely refined and contained several alloys.
• She felt she had acted impurely by accepting the bribe.
• The sample was impurely prepared for the laboratory test.
• He believed his motives were impurely driven by greed.
• The chemical compound was impurely synthesized in the experiment.