(1):

(a.) Impatient under coercion, chastisement, or opposition; refractory.

(2):

(a.) Uneasy; restless; averse to standing still; fidgeting about; - applied especially to horses.

(3):

(a.) Unwilling to go on; obstinate in refusing to move forward; stubborn; drawing back.

(4):

(a.) Inactive; sluggish.