fau·tor I. \ˈfȯd.ə(r)\noun (-s) Etymology: Middle English fautour, from Latin or Middle French; Middle French fauteur, from Latin fautor, from fautus (past participle of favēre to be favorable) + -or — more at favor archaic: one that gives support : patron, protector, partisan, abettor II. \ˈfȯtər\ Scotland variant of faulter