Adjective: dumbfounded 'dúm,fawn-did or dúm'fawn-did [N. Amer], dúm'fawn-did [Brit]
- As if struck dumb with astonishment and surprise
"a circle of policemen stood dumbfounded by her denial of having seen the accident";
- dumfounded, flabbergasted, stupefied, thunderstruck, dumbstruck, dumbstricken
- 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
See also: surprised
Type of: affect, bear on, bear upon, impact
Encyclopedia: Dumbfounded