apprehensive
/ˌæprɛhˈsɪvənt/ i /ˌæprɛhˈsɪvɛnt/ e /æprɛˈhɛnsɪv/Definitions
1. adjective
having or showing a feeling of fear or anxiety about something that is going to happen or exist in the future
“She was apprehensive about the outcome of the exam.”
2. noun
a feeling of fear or anxiety about something
“Her apprehension about public speaking caused her to be nervous.”