"polluted" in the verb sense
1. pollute, foul, contaminate
make impure
"The industrial wastes polluted the lake"
"polluted" in the adjective sense
1. contaminated, polluted
rendered unwholesome by contaminants and pollution
"had to boil the contaminated water"
"polluted lakes and streams"
Source: WordNet® (An amazing lexical database of English)
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