cleanly (adj.)youdaoicibaDictYouDict[cleanly 词源字典]
Old English clænlic "morally pure, innocent," from clæne (see clean (adj.)). Of persons, "habitually clean," from c. 1500.[cleanly etymology, cleanly origin, 英语词源]
cleanly (adv.)youdaoicibaDictYouDict
Old English clænlice; see clean (adj.) + -ly (2).