WordNet sense 1 (haughtily stubborn):

stiff-necked

WordNet sense 2 (unreasonably rigid in the face of argument or entreaty or attack):

mulish

WordNet sense 3 (stubbornly unyielding):

dogged, dour, pertinacious, tenacious, unyielding, dogged

WordNet sense 4 (stubbornly obstructive and unwilling to cooperate):

cantankerous, bloody-minded

WordNet sense 5 (tenaciously unwilling or marked by tenacious unwillingness to yield):

stubborn

WordNet sense 6 (stubbornly persistent in wrongdoing):

obdurate, unrepentant, cussed

WordNet sense 7 (not reformed morally or spiritually):

unregenerate, unregenerated

WordNet sense 8 (resistant to guidance or discipline):

contrary, perverse, wayward, contrary

WordNet sense 9 (not obeying or complying with commands of those in authority):

disobedient