noun

impurity

impurity, contaminant

The water contained a high level of impurity.

The water contained a high level of impurity.

They removed the impurities from the metal.

They removed the impurities from the metal.

impurity in ((sth.)) The impurity in the water was high.

to remove impurities from ((sth.)) They removed the impurities from the metal.

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

From the prefix 'im-' (not) + 'pure' + the noun suffix '-ity' (state/quality). Literally 'the state of not being pure'.

Imagine 'impure tea' – tea with unwanted things mixed in. This helps you remember it's something that makes a substance unclean.

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