to make foul or unclean, esp. with harmful chemical or waste products; dirty

to pollute the air with smoke.

to make morally unclean; defile.

to render ceremonially impure; desecrate

to pollute a house of worship.

Informal . to render less effective or efficient

The use of inferior equipment has polluted the company's service.

verb

clean , cleanse , purify

verb

adulterate , alloy , befoul , besmirch , contaminate , debase , debauch , defile , deprave , desecrate , dirty , dishonor , foul , infect , make filthy , mar , poison , profane , soil , spoil , stain , sully , taint , violate , corrupt , smear , vitiate