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Definitions

dumbfounded

[duhm-foun-did, duhm-foun-] / dʌmˈfaʊn dɪd, ˈdʌmˌfaʊn- /
ADJECTIVE
astounded, confused
Synonyms
STRONG
amazed astonished bamboozled beat bewildered buffaloed confounded dismayed flabbergasted floored knocked licked nonplused overcome overwhelmed puzzled shocked staggered startled stuck stumped stunned surprised thrown
WEAK
agape aghast blown-away bowled over breathless dumb speechless taken aback thunderstruck
Antonyms
STRONG
aware
WEAK
expectant unsurprised

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

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

From Barron's • Feb. 14, 2026

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

From The Wall Street Journal • Feb. 12, 2026

He said Mr Crocker was "dumbfounded", adding: "He couldn't believe it. He couldn't believe it was so quick, either."

From BBC • Jul. 31, 2025

“Hey everyone, I’m here with Zohran,” said Mullen, in a bucket hat, clearly dumbfounded by his unlikely ascendance to campaign surrogacy.

From Slate • Jun. 26, 2025

I stare at Ben, dumbfounded, but he shoots me a tiny smile.

From "What If It's Us" by Becky Albertalli and Adam Silvera

From Roget's 21st Century Thesaurus, Third Edition Copyright © 2013 by the Philip Lief Group.