(a.) Having a head like that of a bull. Fig.: Headstrong; obstinate; dogged.

adherent adhesive balking balky bigoted bulldogged bulldoggish bulldoggy bulletheaded case-hardened clingy closed-minded deaf dogged dogmatic fanatic gluey glutinous gummy hardheaded headstrong intolerant intractable mulish obstinate opinionated overzealous persevering persistent pertinacious perverse pigheaded refractory restive self-adhesive self-willed set sot stickable sticky stiff-necked strong-willed strongheaded stubborn sulky sullen tacky tenacious tough uncooperative unregenerate viscid willful