nervousness
noun /ˈnɜːvəsnəs/
  /ˈnɜːrvəsnəs/
[uncountable]- the feeling of being anxious about something or afraid of something
- He tried to hide his nervousness.
 
 - the fact of tending to get worried or frightened easily
- His inexperience and general nervousness make him unsuitable for the top job.
 
 opposite confidence