1. (a.) Not easily restrained; ungovernable; obstinate; stubborn.

2. (a.) Directed by ungovernable will, or proceeding from obstinacy.

balking balky bigoted bulldogged bulletheaded bullheaded case-hardened disobedient dogged dogmatic fanatic hardheaded heady insubordinate intolerant irresponsible lawless licentious mulish mutinous obstinate opinionated overzealous persevering pertinacious pigheaded rampant refractory reinless restive self-willed set stiff-necked strong-willed strongheaded stubborn sulky sullen tenacious unaccountable unbridled unchecked uncontrolled uncooperative uncurbed undisciplined ungoverned unregenerate unreined unrestrained wildcat willful wrongheaded