- dumfound
- vastound, astonish, amaze, Inf. flabbergast, strike dumb, render speechless, dumfounder; stun, stagger, take aback, floor, shock, jar, jolt, Inf. bowl over, Inf. give [s.o.] a turn, Inf. catch [s.o.] up short; stupefy, petrify, paralyze, benumb, incapacitate; startle, surprise, disconcert; confuse, baffle, confound nonplus, perplex, embarrass, pose; bewilder, dazzle, electrify, Inf. take one's breath away; unbalance, disorient, Inf. catch off guard.
A Note on the Style of the synonym finder. 2014.