Synonyms of dumbfounded

1 Syllable

thrown, stuck, dumb, beat

2 Syllables

dizzier, dismayed, dumbstruck, zonked, puzzled, breathless, stumped, stunned, blinded, punch-drunk, speechless, knocked, dizzy, floored, licked, shocked, woozy, startled, aghast, reeling

3 Syllables

amazed, bamboozled, nonplused, staggered, slap-happy, confounded, befuddled, thunderstruck, awestruck, tongue-tied, buffaloed, agape, stupefied, surprised

4 Syllables

overwhelmed, astonished, overcome, bewildered, flabbergasted