Related Clues:
- Having the jitters, perhaps
- Feeling restless
- Feeling troubled
- Tightly wound
- Tied up in knots
- It can be past or present, in grammar
- Verb form
- Anxiously impatient
- Grammar concern
- Like some performance art
- Far from laid-back
- About to snap
- Pushing the envelope
- Like a bundle of nerves
- Innovative and daring