1. Tensed
E.g. He was tense with excitement.

2. Uneasy
E.g. She felt uneasy.

3. Shaky
E.g. She managed a shaky laugh.

4. Jittery
E.g. Caffeine makes me jittery.

5. Agitated
E.g. There is no point getting agitated.

6. Uptight
E.g. Don't get uptight about the meeting.

7. Jumpy
E.g. He was tired and jumpy.

8. Edgy
E.g. He became edgy and defensive.