- The definition of antsy is someone who can't sit still or who is fidgeting, often because of excitement, nerves or anticipation.
An example of antsy is a kid on Christmas morning
Used by arrangement with John Wiley & Sons, Inc.
adjective ant·si·er, ant·si·est Slang
- Restless or impatient; fidgety: The long wait made the children antsy.
- Nervous; apprehensive: “Camps got shot up all the time, but if there wasn't a shoot-up, they'd get antsy” (Harper's).
Origin: Perhaps from the incessant motions of ants.