WordNet sense 1 (unwilling to submit to authority):

unruly

WordNet sense 2 (not submissive to authority):

insubordinate

WordNet sense 3 (refusing to submit to authority):

recusant

WordNet sense 4 (habitually disposed to disobedience and opposition):

froward, headstrong

WordNet sense 5 (stubbornly resistant to authority or control):

fractious, recalcitrant, refractory

WordNet sense 6 (resistant to guidance or discipline):

contrary, perverse, wayward, contrary