Act guilty, perhaps, 6 letters
Betray nervousness, perhaps, 6 letters
Drum your fingers on the table, e.g., 6 letters
Move about restlessly, 6 letters
A feeling of agitation expressed in continual motion, 6 letters
Had ants in one's pants, 8 letters
Played with one's hands, say, 8 letters
Obviously on pins and needles, 7 letters
Unable to sit still, 7 letters
A feeling of agitation expressed in continual motion, 11 letters