プログレッシブ和英中辞典(第4版)の解説
むかんがえ【無考え】
無考えな 〔思慮のない〕thoughtless, unthinking；〔向こう見ずな〕rash
彼は無考えに父の残した蔵書をみな処分してしまった
He thoughtlessly disposed of all the books that had belonged to his deceased father.
機密事項をＥメールに書くとは無考えだ
It was rash of you to write about such a sensitive matter in e-mail.