The Collaborative International Dictionary of English v.0.48:

Unruliness \Un*rul"i*ness\, n.
   Quality or state unruly.
   [1913 Webster]

WordNet (r) 3.0 (2006):

unruliness
    n 1: the trait of being prone to disobedience and lack of
         discipline [syn: unruliness, fractiousness,
         willfulness, wilfulness]

Moby Thesaurus II by Grady Ward, 1.0:

91 Moby Thesaurus words for "unruliness":
   abandon, abandonment, anarchism, anarcho-syndicalism, anarchy,
   antinomianism, assault, attack, battering, butchery, chaos,
   confusion, contumaciousness, contumacy, criminal syndicalism,
   defiance, defiance of authority, disorder, disorderliness,
   disorganization, disruption, forcible seizure, fractiousness,
   immoderacy, incontinence, incorrigibility, indiscipline,
   indocility, indomitability, insuppressibility, intemperance,
   intractability, irrepressibility, killing, laxness, laying waste,
   licentiousness, looting, lynch law, massacre, misrule, mob law,
   mob rule, mobocracy, nihilism, noncoercion, nonintimidation,
   obstinacy, obstreperousness, ochlocracy, onslaught, orneriness,
   permissiveness, pillaging, primal chaos, rape, rebellion,
   recalcitrance, recalcitrancy, recalcitration, refractoriness,
   resistance, restiveness, revolution, riot, rioting, riotousness,
   sacking, shrewishness, slaughter, sowing with salt, stubbornness,
   syndicalism, tohubohu, turmoil, unconstraint, uncontrol,
   uncontrollability, ungovernability, uninhibitedness,
   unmalleability, unmanageability, unmoldableness, unreserve,
   unrestraint, unstrictness, unsubmissiveness, untamableness,
   violation, wantonness, wildness