• synonyms


or dum·found

[duhm-found, duhm-found]
verb (used with object)
  1. to make speechless with amazement; astonish.
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Also dumb·found·er, dum·found·er.

Origin of dumbfound

First recorded in 1645–55; dumb + (con)found
Related formsdumb·found·er·ment, dum·found·er·ment, noun

Synonyms for dumbfound

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for dumfounded

Historical Examples of dumfounded

  • "You can see for yourself," he said grimly to the dumfounded magnate.

    Within the Law

    Marvin Dana

  • Captain Price was so dumfounded that for a moment words failed him.

    An Encore

    Margaret Deland

  • When that happened, the shock of it brought him abruptly to a dumfounded halt.


    Rafael Sabatini

  • Frederick Augustus was so dumfounded, he could only grind his teeth.

  • All this took place so rapidly that the chevalier was dumfounded.

British Dictionary definitions for dumfounded



  1. (tr) to strike dumb with astonishment; amaze
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Word Origin for dumbfound

C17: from dumb + (con) found
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for dumfounded



1650s, from dumb (adj.) + ending from confound.

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Online Etymology Dictionary, © 2010 Douglas Harper