The Collaborative International Dictionary of English v.0.48:

Unruly \Un*rul"y\, a. [Compar. Unrulier, superl. Unruliest.]
   [Pref. un- not + rule. Cf. Ruly.]
   Not submissive to rule; disregarding restraint; disposed to
   violate; turbulent; ungovernable; refractory; as, an unruly
   boy; unruly boy; unruly conduct.
   [1913 Webster]

         But the tongue can no man tame; it is an unruly evil,
         full of deadly poison.                   --James iii.
                                                  8.
   [1913 Webster]