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Definition of dumbfoundingly

dumbfoundingly

/dʌmˈfaʊn.dɪŋ.li/
dumb · found · ing · ly
Adjective:dumbfounding
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dumbfoundingly Lexical Profile

dumbfoundingly Game Scores & Validity

• adverb

1

In a manner or to a degree that causes great astonishment, bewilderment, or speechlessness.

Example

"The committee reached a dumbfoundingly shortsighted decision despite the clear evidence presented to them."

Synonyms
View all synonyms for dumbfoundingly
Antonyms
View all antonyms for dumbfoundingly

• Rhymes for dumbfoundingly

• Nearby Words

dumbbell
dumbfound
dumbfoundedness
dumbfoundingly
dumbhead
dumbly
dumbness

Word Origin & Etymology

Formed from the participle 'dumbfounding' plus the adverbial suffix '-ly'. The base verb 'dumbfound' emerged in the mid-17th century as a blend of 'dumb' (meaning speechless) and 'confound' (to throw into confusion).

Usage Trend

Historical frequency of usage in published text.

180019102020
Data source: Google Books Ngram Viewer

Cite this Entry

Wordmom. (2026). Definition of Dumbfoundingly. In Wordmom Dictionary. Retrieved Nov 5, 2026, from https://wordmom.com/dictionary/dumbfoundingly
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