dumbfounded

or dum·found·ed

[ duhm-foun-did, duhm-foun- ]

/ dʌmˈfaʊn dɪd, ˈdʌmˌfaʊn- /

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See synonyms for dumbfounded on Thesaurus.com

adjective

speechless with amazement; astonished or showing astonishment: I smiled at the dumbfounded look on their faces as their eyes widened and their mouths fell slack.

verb

the simple past tense and past participle of dumbfound.

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His boss, whom he admires, is waiting to meet with him about the big project.

His boss, who he admires, is waiting to meet with him about the big project.

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Origin of dumbfounded

dumbfound + -ed²

Words nearby dumbfounded

dumb cane, dumb cluck, dumb Dora, dumb down, dumbfound, dumbfounded, dumbhead, dumbledore, dumbo, dumbphone, dumb sheave

How to use dumbfounded in a sentence

The hit was so jarring that it stunned the officials, who were apparently too dumbfounded to call the obvious foul.
In The 1990s, The New York Knicks Fought Everyone — Even David Stern|Chris Herring (chris.herring@fivethirtyeight.com)|January 18, 2022|FiveThirtyEight
A Target associate who was dumbfounded that shoppers were suddenly desperate for yeast.
The sad, predictable limits of America’s “economic recovery”|Emily Stewart|September 22, 2021|Vox
After all, she and her peers are familiar with thinking things will go one way and then being left dumbfounded, a little heartbroken, but most of all, hopeful.
Prom, after a senior year interrupted|Melinda Fakuade|July 23, 2021|Vox
As rioters stormed Capitol Hill on January 6, Theo—like many Americans—watched, dumbfounded and in horror.
A guide to being an ethical online investigator|Tanya Basu|January 14, 2021|MIT Technology Review

On Thursday, a woman who answered the phone there was dumbfounded as to why someone would be asking about the case.
Chicago’s Cops Don’t Even Get Investigated for Shooting People in the Back|Justin Glawe|December 5, 2014|DAILY BEAST
But I was dumbfounded to get hit up by a federal agency with an annual budget of $750 million.
Rich People Want You to Work for Free|Ted Gioia|October 20, 2014|DAILY BEAST
I was devastated the first time I was deleted, and dumbfounded each time thereafter.
Porn Stars Want to Know: Why Did Facebook Delete Me?|Aurora Snow|August 2, 2014|DAILY BEAST
Tirico stood there dumbfounded, and the woman turned and left the soiree.
World Cup Anchor Mike Tirico’s Bizarre History: Reports of Stalking and Sexual Harassment|Marlow Stern|July 1, 2014|DAILY BEAST
In the final moments, however, LeBron hits a game-winning three-pointer, and Cooke can only stare dumbfounded.
The LeBron James Who Wasn’t: The Story of Lenny Cooke|Thomas Flynn|December 5, 2013|DAILY BEAST
The door was open, and the woman and the child stood dumbfounded and overwhelmed in a scene of incredible desolation.
Rosemary in Search of a Father|C. N. Williamson
I think even Dr. Hudson was dumbfounded; we had not expected unconditional surrender.
Nine Men in Time|Noel Miller Loomis
The crafty captain sat for a moment quite dumbfounded; but he could bear it no longer.
Skipper Worse|Alexander Lange Kielland
For a moment I was as dumbfounded as the bridegroom who discovers a plait of hair on his brides dressing table.
The Romance of His Life|Mary Cholmondeley
The countess looked up at her husband, quite dumbfounded, and he seemed rather distressed himself.
The Kellys and the O'Kellys|Anthony Trollope