dumbfounded

American  

[duhm-foun-did, duhm-foun-] / dʌmˈfaʊn dɪd, ˈdʌmˌfaʊn- /

Or dumfounded

adjective

1. 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.

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verb

1. the simple past tense and past participle of dumbfound.

Etymology

Origin of dumbfounded

dumbfound ( def. ) + -ed ² ( def. )

Example Sentences

American skater Nathan Chen, the Beijing men's individual gold medallist, was dumbfounded, saying: "What a shock".

From Barron's

He said the volatility in recent weeks has left him and other investors feeling “awestruck and dumbfounded at times.”

From The Wall Street Journal

I was so dumbfounded by Flora’s words, I didn’t have enough sense to stop that child from taking my whole sack of lemon drops right out of my pocket.

From Literature

“Whether owing to that striking optimism or some other loftier force at work,” said family member Gregory Small, she had survived with pancreatic cancer for 12 years, a feat that left her doctors dumbfounded.

From Los Angeles Times

I stand there, dumbfounded for a moment, before Autumn nudges me.

From Literature