nonpolluting

verb (used with object), pol·lut·ed, pol·lut·ing.

1. to make foul or unclean, especially with harmful chemical or waste products; dirty: to pollute the air with smoke.
2. to make morally unclean; defile.
3. to render ceremonially impure; desecrate: to pollute a house of worship.
4. Informal. to render less effective or efficient: The use of inferior equipment has polluted the company’s service.

adjective

1. (of a fuel, vehicle, technology, etc) not resulting in or causing pollution

verb (tr)

1. to contaminate, as with poisonous or harmful substances
2. to make morally corrupt or impure; sully
3. to desecrate or defile

v.late 14c., “to defile,” a back formation from pollution, or else from Latin pollutus, past participle of polluere “to defile, pollute, contaminate.” Related: Polluted; polluting. Meaning “make physically foul” is from 1540s; specific sense “contaminate the environment” emerged from late 19c. v.

1. To make unfit for or harmful to living things, especially by the addition of waste matter; contaminate.
2. To make less suitable for an activity, especially by the introduction of unwanted factors.