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"contaminate" is also used as a crossword clue. If that's what you saw, the answer is often pollute (7 letters).
Definitions
To make something impure, polluted, or unsafe.
Word origin
First attested in the early 15ᵗʰ century, in Middle English; from Middle English contaminat(e) (“sullied, defiled; infected with desease”, also used as the past participle of contaminaten), see -ate (adjective-forming suffix) and Etymology 1 for more. Participial usage up until Early Modern English.
Used in a sentence
“This water is contaminated. It isn't safe to drink.”
“Bombs and munitions meanwhile contain toxic substances that contaminate soil, water, and vegetation.”
“Shall we now Contaminate our figures with base bribes?”
Source: Wiktionary, CC BY-SA 4.0
Used as a crossword answer1 curated clues
01“Make impure”11 letters
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