Meaning of “nervous” - Learner’s Dictionary

nervous

adjective us uk /ˈnɜːvəs/
Extra Examples
When you're nervous or frightened, it helps to breathe slowly and deeply.She looked calm but was feeling nervous inside.She was very nervous, but she remained outwardly calm.I was so nervous I felt quite sick.He was nervous on his first day at school.
WORRIED

B1 worried and anxious:

a nervous cough/laugh
She's very nervous about her driving test.
BODY [ always before noun ]

relating to the nerves in the body:

a nervous disorder

(Definition of “nervous” from the Cambridge Learner’s Dictionary © Cambridge University Press)