焦虑的名词英文单词是anxiety；

anxiety：n.焦虑；忧虑；担心；害怕；渴望

The decision occasioned us much anxiety.

这个决定让我们忧虑不堪。

His father's arrival lulled the boy's anxiety.

男孩在他父亲来了后便不那么焦躁不安了。

Valium is usually prescribed to treat anxiety.

安定剂通常用于治疗焦躁。