General:
* Cowed: This is the most direct adjective, meaning "made to feel intimidated or fearful."
* Timid: Describing someone who is easily frightened and lacking confidence.
* Frightened: This is a basic term for feeling fear.
* Apprehensive: Expressing anxiety or fear about the future.
Specific:
* Cringing: Describing someone who is shrinking back in fear or disgust.
* Trembling: Describing someone who is shaking due to fear or cold.
* Cringing: Describing someone who is shrinking back in fear or disgust.
* Shrinking: Describing someone who is trying to make themselves small or inconspicuous.
The best adjective will depend on the specific situation and the emotion you want to convey.