- 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
adjectiveant·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 of antsyPerhaps from the incessant motions of ants.
(comparative antsier, superlative antsiest)
From ants + -y, as in ants in one's pants. The term antsy was first noted as a rural Southern USA figure of speech in the early 20th century.