impure

Từ điển Oxford Advanced Learner 8th

im·pure BrE [ɪmˈpjʊə(r)] NAmE [ɪmˈpjʊr] adjective
1. not pure or clean; not consisting of only one substance but mixed with one or more substances often of poorer quality
•impure gold
2. (old-fashioned or formal) (of thoughts or feelings)morally bad, especially because they are connected with sex
•impure thoughts/motives
Opp: ↑pure

Word Origin:
[impure] late Middle English (in the sense ‘dirty, containing offensive matter’): from Latin impurus, from in- ‘not’ + purus ‘pure’.

Example Bank:
•Some of these drugs are highly impure.

• Từ trái nghĩa / Antonyms:
  clean, pure