形容词考虑不周的，未经考虑的

动词改变想法，不想( unthink的现在分词 )

形容词thinking

1. 莽撞的；不顾后果的；没头脑的
If you say that someone is unthinking, you are critical of them because you consider that they do not think carefully about the effects of their behaviour.

e.g. He doesn't say those silly things that unthinking people say...
他并没有像没头脑的人那样说蠢话。
e.g. Bruce was no unthinking vandal.
布鲁斯决非蓄意搞破坏的莽汉。