rudesby (n.)youdaoicibaDictYouDict[rudesby 词源字典]
"insolent person," 1560s, mock surname from rude + -by, common place-name (and thus surname) ending element, as in Grimsby, Rigby. Similar formations in idlesby, sneaksby "paltry, sneaking fellow" (1570s), suresby.[rudesby etymology, rudesby origin, 英语词源]