quitter /ˈkwɪ.tə/noun 7verb 1forms 3 noun7 •One who quits. •One who gives in.Winners never quit and quitters never win.Don't be a quitter — hang in there! •One who succeeds in desisting from a vice, especially smoking, drinking, or drugging.Quitters are winners! If you can't quit on the first try, hang in there and try to quit again! •Matter flowing from a wound or sore; pus. •(no longer used) A leaver. •(no longer used) A deliverer. •(no longer used) Scoria of tin. verb1 •To suppurate; ooze with pus. formsquittered · quittering · quitters