1. most nervous, anxious, or easily startled
Usage: superlative form of jumpy

Examples

• She was the jumpiest person in the haunted house.
• The cat became jumpiest during thunderstorms.
• He’s always been jumpy, but today he’s the jumpiest I’ve ever seen him.
• Among all the contestants, Maria was the jumpiest before the competition.
• The jumpiest horse in the stable refused to cross the bridge.
• After drinking too much coffee, I felt like the jumpiest person in the room.