"insolent person," 1560s, mock surname from rude + -by, common place-name (and thus surname) ending element, as in Grimsby, Rigby. Similar formations in idlesby "lazy fellow" (1610s), sneaksby "paltry, sneaking fellow" (1570s), suresby (16c.), lewdsby (1590s), nimblesby (1610s).
)window.location='https://www.paypal.com/cgi-bin/webscr?cmd=_donations&business=byronic106@yahoo.com&lc=US&item_name=Donation+to +Help+Keep+Etymonline+Free+and+Open&no_note=0&cn=&curency_code=USD&bn=PP-DonationsBF:btn_donateCC_LG.gif:NonHosted'){kind=link}