noun

impurity

impurity, contaminant, adulteration

The water was tested for impurities.

The water was tested for impurities.

He felt a sense of moral impurity.

He felt a sense of moral impurity.

((impurities)) in sth. substances that make sth. not pure They found impurities in the sample.

Synonyms: contaminant, pollutant, taint; Antonyms: purity, cleanness

From 'impure' + '-ity' (noun-forming suffix). 'Impure' is from Latin 'im-' (not) + 'purus' (pure).

'Im-' means 'not', so it's the state or substance of 'not' being 'pure'.

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