Definitions

1. adjective

most nervous or agitated; most likely to shake or quiver

“She was the jitteriest person in the crowd waiting for the concert to start.”

2. superlative form

most nervous or agitated; most likely to shake or quiver

“He was the jitteriest of us all when we were on the roller coaster.”

3. comparative form

more nervous or agitated; more likely to shake or quiver

“She was more jittery than any of us when we were in the exam room.”