dumbfound duhm fownd v be a mystery or bewildering to Usage(s) It is not apathy but the villagers are dumbfound and are frozen by fear. In college, calculus would often dumbfound Gregory. Jim's reserved behavior has dumbfound his friends and foes alike. Synonym(s) perplex vex stick get puzzle mystify baffle beat pose bewilder flummox stupefy nonplus gravel amaze