you have made such a quick decision.honestly speaking,I am not__happy about the decision

A

你这么快就做出了决定。实话说，对这个决定我不怎么不满意

altogether（弱化否定语气）太，十分，非常

再如：

We were not altogether sure that the comet would miss the Earth...

我们不能完全肯定彗星不会与地球相撞。

希望帮助到你，若有疑问，可以追问~~~

祝你学习进步，更上一层楼！(*^__^*)