upset的形容词形式是什么

upset本身就是形容词。
例句：
The little man, upset, was lisping badly、
那个矮小的男人，很生气，说话咬舌咬得厉害。
It upset me no end to hear theyd split up、
听说他们已离婚，我感到非常不安。

We are bitterly upset at what has happened、

我们对发生的事感到极其难过。

Jack will have been very upset by all this、

这一切肯定会让杰克非常难过。

It is little wonder (that) she was so upset、

她如此心烦意乱，并不奇怪。