nervousness

noun
1
the feeling of being anxious about something or afraid of something
اضطراب, نگرانی, تشویش, دلشوره
2
the fact of tending to get worried or frightened easily
اضطراب, نگرانی, دلواپسی, دلهره
His inexperience and general nervousness make him unsuitable for the top job.
opposite confidence