Available Definitions:
1) superl. - Foolishly obstinate or resolute; stubborn; unrelenting; unfeeling; stern.
2) superl. - Resolute, in a good sense; or firm, unyielding quality; as, a man of sturdy piety or patriotism.
3) superl. - Characterized by physical strength or force; strong; lusty; violent; as, a sturdy lout.
4) superl. - Stiff; stout; strong; as, a sturdy oak.
5) n. - A disease in sheep and cattle, marked by great nervousness, or by dullness and stupor.