incogitant

他的考虑不周的评论在会议期间冒犯了在场的所有人。

His ___incogitant remarks offended everyone present during the meeting.

她意识到自己未经思考便做出了决定，这实在是不智之举。

She realized it was unwise to make such an ___incogitant decision.

那个考虑不周的玩笑伤透了她朋友的心。

The ___incogitant joke deeply hurt her friend's feelings.