词性是名词，意思是激动，兴奋，例如：

1、The news caused great excitement among her friends.这消息使她的朋友们兴奋不已。

2、The tension and excitement built gradually all day.整个一天中，紧张与兴奋的气氛越来越浓。

3、The children went wild with excitement.孩子们欣喜若狂。