Verb: dumbfound 'dúm,fawnd or dúm'fawnd [N. Amer], dúm'fawnd [Brit]
- Confuse or leave at a loss because of something complex or difficult to understand
"These questions dumbfound even the experts";
- confuse, throw, fox, befuddle, fuddle, bedevil, confound, discombobulate [informal], perplex, vex, stick, get, puzzle, mystify, baffle, beat, pose, bewilder, flummox, stupefy, nonplus, gravel
- Strike dumb; confuse with astonishment
"The magician's trick dumbfounded the audience";
- dumfound
Derived forms: dumbfounding, dumbfounded, dumbfounds