verb🔗ShareTo confuse and bewilder; to leave speechless."The news of her promotion dumbfounded everyone at the office. "mindemotionsensationChat with AIVocabulary GamePractice Reading
adjective🔗ShareShocked and speechless."She was dumbfounded when she opened the door and saw a surprise party with all her friends. "sensationmindemotionChat with AIVocabulary GamePractice Reading