Definitions

1. adjective

not pure; free from impurities or contaminations

“The unpure water from the well was not safe to drink.”

2. adjective

not morally or ethically sound; impure in thought, intention, or action

“The unpure motives behind her actions led to a scandal.”

3. noun

something that is not pure; an impurity or a contaminant

“The unpure air in the polluted city was causing health problems.”