Apprehensive
Definition 1 of 2
Pro Tip 1/3
Nuance of Uncertainty
Expresses fear or concern about something that hasn't happened yet, but might. He was apprehensive about the weather forecast for the camping trip.
Pro Tip 2/3
Not Always Negative
Can imply a sense of cautious optimism or curiosity, not just fear. She felt apprehensive yet excited about studying abroad.
Pro Tip 3/3
Intensity of Feeling
Indicates a milder form of fear compared to 'terrified' or 'horrified'. The audience was slightly apprehensive before the controversial play began.