(1)utter impulsively; "He blurted out the secret"; "He blundered his stupid ideas"
(2)衝動的に口にする
(1)He blurted out the secret
(2)彼は秘密をうっかり口に出した
(3)He blundered his stupid ideas
(4)彼は、ばかな考えをうっかり口に出した