contaminated

word · lemma: contaminate

/kənˈtæməˌneɪtɪd/
kuhn-TAM-uh-nay-tid
/kəntˈæmɪnˌeɪtɪd/
kuhn-TAM-i-nay-tid

Definition

Made impure, unsafe, or unusable by the introduction of harmful or unwanted substances.

Usage & Nuances

Used for water, food, soil, blood, or evidence. Often implies a serious health or safety risk. "Contaminated" is stronger than "dirty" — it suggests invisible or dangerous impurities.

Example Sentences

The detective realized the evidence had been contaminated by the first officers on the scene.

natural

The water supply was contaminated with lead.

basic

Don't eat that — the food might be contaminated.

basic

The contaminated soil needs to be removed before building.

basic

Years of industrial dumping had contaminated the river beyond repair.

natural

She worried that her research data had been contaminated by sampling errors.

natural