Adjective: antsy (antsier,antsiest)
an(t)-seeUsage: N. Amer, informal- Nervous and unable to relax
"The antsy child couldn't sit still during the long car ride";
- fidgety, fretful, itchy, restless, keyed-up, on edge, twitchy [informal]
Derived forms: antsiest, antsier
See also: anxious, nervous, queasy, tense, uneasy, unquiet