N-PLURAL 紧张不安;心神不定 If you have the jitters, you feel extremely nervous, for example because you have to do something important or because you are expecting important news. 紧张不安;心神不定 [informal]
I had a case of the jitters during my first two speeches.
我在最初两次讲演时感到非常紧张。
Officials feared that any public announcements would only increase market jitters.