Dumbfound

глагол ошарашить, ошеломить, потрясти Синоним(ы): confuse, stun, stupefy, stagger

Большой англо-русский словарь

Dumbfound

also dumfound transitive verb Etymology: dumb + -found (as in confound) to confound briefly and usually with astonishment Synonyms: see puzzledumbfoundingly adverb

Энциклопедический словарь Мерриама-Вебстера