self-willed

from WordNet (r) 3.0 (2006)

self-willed
    adj 1: habitually disposed to disobedience and opposition [syn:
           {froward}, {headstrong}, {self-willed}, {willful},
           {wilful}]

from The Collaborative International Dictionary of English v.0.48

Self-willed \Self`-willed"\, a.
   Governed by one's own will; not yielding to the wishes of
   others; obstinate.
   [1913 Webster]

from Moby Thesaurus II by Grady Ward, 1.0

77 Moby Thesaurus words for "self-willed":
      balking, balky, bigoted, bulldogged, bulletheaded, bullheaded,
      case-hardened, contrary, contumacious, determined, difficult,
      disobedient, dogged, dogmatic, fanatic, forceful, froward,
      hardheaded, headstrong, heady, incorrigible, indisciplined,
      insubordinate, intolerant, intractable, irresponsible, lawless,
      licentious, mulish, mutinous, naughty, nonconforming, obstinate,
      opinionated, overzealous, persevering, pertinacious, perverse,
      pigheaded, rampant, recalcitrant, recusant, refractory, reinless,
      restive, set, stiff-necked, strong-willed, strongheaded, stubborn,
      sulky, sullen, tenacious, transgressive, unaccountable, unbridled,
      unchecked, uncomplying, uncontrollable, uncontrolled,
      uncooperative, uncurbed, undisciplined, unduteous, undutiful,
      ungovernable, ungoverned, unmanageable, unregenerate, unreined,
      unrestrained, unruly, vexatious, violative, wayward, wildcat,
      willful