Ill-considered Action妄动
ill-considered wording说错话
an ill-considered decision粗率的决定
an ill-considered act不明智的举动
ADJ（形容词） If you describe something that someone says or does as ill-considered, you mean that it is not sensible or not appropriate. 考虑不周的; 不明智的
He made some ill-considered remarks about the cost.
他对这项成本发表了一些不当看法。