[duhm-found, duhm-found] /dʌmˈfaʊnd, ˈdʌmˌfaʊnd/

verb (used with object)
to make speechless with amazement; astonish.
(transitive) to strike dumb with astonishment; amaze

past participle adjective from dumbfound.

1650s, from dumb (adj.) + ending from confound.


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