Synonyms of dumbfounded in English:

dumbfounded


See US English definition of dumbfounded

See UK English definition of dumbfounded

adjective

1‘when you told me I had won I was dumbfounded’

SYNONYMS
astonished, astounded, amazed, staggered, surprised, startled, stunned, confounded, nonplussed, stupefied, dazed, dumbstruck, open-mouthed, agape, speechless, at a loss for words, thunderstruck, goggle-eyed, wide-eyed
taken aback, thrown, shaken, unnerved, disconcerted, discomposed, bewildered
informal flabbergasted, floored, flummoxed, knocked for six, knocked sideways, knocked out, bowled over, blown away, unable to believe one's ears, unable to believe one's eyes
British informal gobsmacked