IPA: /ɪmˈpjʊrli/
KK: /ɪmˈpjʊrli/
In a way that is not pure or clean; mixed with something that makes it less good or acceptable.
The water was impurely treated, leading to health concerns.
Impurely → It is formed from "im-" (meaning not) and "purus" (from Latin, meaning pure) and the suffix "-ly" (meaning in a manner). The word "impurely" means in a manner that is not pure or contaminated.
Think of 'not' ('im-') being combined with 'pure' ('purus') to remember that 'impurely' means in a way that is not pure.