impurities

NOUN

contaminant

Synonyms

STRONGEST

contamination grime pollutant scum

STRONG

adulteration corruption defilement dirt filth pestilence poisoning pollution stain taint uncleanness

WEAK

foreign matter

Antonyms

STRONGEST

cleanliness

STRONG

pureness purification purity sterility

Example Sentences

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See Examples For:

impurities

Refined olive oil, on the other hand, undergoes industrial processing to remove impurities.

From Science Daily ● Apr. 18, 2026

The manufacturing process can also introduce impurities — like bacteria or heavy metals — into peptide drugs.

From Salon ● Apr. 4, 2026

These impurities make the chemical composition unpredictable and reduce performance, which prevents the material from meeting the strict standards required for structural automotive alloys.

From Science Daily ● Mar. 10, 2026

Ice masters look at the PH levels of the water and purify it to remove minerals and impurities.

From BBC ● Feb. 10, 2026

Onions made him feel cleaned up, as if the tears they drew from him took away impurities.

From "Half of a Yellow Sun" by Chimamanda Ngozi Adichie