dumbfounded

UK:**UK and possibly other pronunciationsUK and possibly other pronunciations/dʌmˈfaʊndɪd/


WordReference Random House Learner's Dictionary of American English © 2026
dumb•found /dʌmˈfaʊnd, ˈdʌmˌfaʊnd/USA pronunciation   v. [~ + object]
  1. to make speechless with amazement:dumbfounded by all the damage done by the storm.

WordReference Random House Unabridged Dictionary of American English © 2026
dumb•found  (dum found′, dum′found′),USA pronunciation v.t. 
  1. to make speechless with amazement;
    astonish.
Also, dumb•found′er. 
  • dumb + (con)found 1645–55
dumb•found′er•ment, n. 
    amaze, confound, astound, stagger.
Collins Concise English Dictionary © HarperCollins Publishers::
dumbfound, dumfound /dʌmˈfaʊnd/ vb
  1. (transitive) to strike dumb with astonishment; amazeAlso (archaic): dumbfounder, dumfounder
Etymology: 17th Century: from dumb + ( con) found
'dumbfounded' also found in these entries (note: many are not synonyms or translations):
shattered - dumbstruck - exclamation point - open-mouthed - thunderstruck

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