Pronunciation: (ant'sē), [key]
—adj., ants•i•er, ants•i•est. Informal.
1. unable to sit or stand still; fidgety: The children were bored and antsy.
2. apprehensive, uneasy, or nervous: I'm a little antsy since hearing those storm warnings.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.