- to make speechless with amazement; astonish.
Also dumb·found·er, dum·found·er.
Origin of dumbfound
SynonymsSee more synonyms on Thesaurus.com
amaze, confound, astound, stagger.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for dumbfound
Dumbfound, to perplex, to beat soundly till not able to speak.The Slang Dictionary
John Camden Hotten
He can show such familiarity with the Incas affairs as to dumbfound the old boy.The Radio Boys' Search for the Inca's Treasure</p>
- (tr) to strike dumb with astonishment; amaze
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 dumbfound
Online Etymology Dictionary, © 2010 Douglas Harper