Restless or fidgety; unable to stay still. The child was squirrelly during the long car ride, constantly shifting in his seat.
Eccentric or unpredictable in behavior. Her squirrelly ideas often caught her colleagues off guard during meetings.
He felt squirrelly before his big presentation, pacing back and forth in the hallway.
Resembling or characteristic of a squirrel, especially in quick, darting movement or appearance. With his bright eyes and sudden motions, he had a distinctly squirrelly look.