pollute (v.)youdaoicibaDictYouDict[pollute 词源字典]
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.[pollute etymology, pollute origin, 英语词源]