jit ‧ ters /ˈdʒɪtəz $ -ərz/ BrE AmE noun [plural]
[ Date: 1900-2000 ; Origin: Perhaps from Mandingo ji-to 'frightened' ]
informal a nervous worried feeling, especially before an important event:
The jitters are worst in the capital, where 61% of people are fearful of a terrorist attack.