also dumfound transitive verb Etymology: dumb + -found (as in confound) Date: 1653 to confound briefly and usually with astonishment, see: puzzle ~ingly adverb
DUMBFOUND
Meaning of DUMBFOUND in English
Merriam Webster. Explanatory English dictionary Merriam Webster. Толковый словарь английского языка Мерриам-Уэбстер. 2012