oaf \ˈōf\noun (-s) Etymology: of Scandinavian origin; akin to Old Norse alfr elf — more at elf 1.obsolete a.: changeling 2b(2) b.: a deformed or mentally defective child 2.: a stupid person : simpleton, dumbbell, boob < numerous readers who may not be such oafs as they suppose — F.L.Allen > 3.: a big clumsy slow-witted fellow : lout, lummox