insubordinate

from WordNet (r) 3.0 (2006)

insubordinate
    adj 1: not submissive to authority; "a history of insubordinate
           behavior"; "insubordinate boys" [ant: {subordinate}]
    2: disposed to or engaged in defiance of established authority
       [syn: {insubordinate}, {resistant}, {resistive}]

from The Collaborative International Dictionary of English v.0.48

Insubordinate \In`sub*or"di*nate\, a.
   Not submitting to authority; disobedient; rebellious;
   mutinous.
   [1913 Webster]

from Moby Thesaurus II by Grady Ward, 1.0

65 Moby Thesaurus words for "insubordinate":
      agitator, brawler, contrary, contumacious, defiant, disaffected,
      disobedient, dissentious, extremist, factious, fractious, frondeur,
      headstrong, heady, incompliant, indocile, insurgent,
      insurrectional, insurrectionary, insurrectionist, insurrecto,
      intractable, irresponsible, lawless, licentious, malcontent,
      maverick, mutineer, mutinous, nonconformist, noncooperating,
      noncooperative, obstreperous, perverse, rampant, rebel, rebellious,
      recalcitrant, refractory, reinless, revolter, revolutionary,
      revolutionist, rioter, seditious, self-willed, subversive, traitor,
      unaccountable, unbridled, unchecked, uncompliant, uncomplying,
      uncontrolled, uncooperative, uncurbed, undisciplined, ungovernable,
      ungoverned, unreined, unrestrained, unruly, unsubmissive, wildcat,
      willful