Ungovernable

(a.) Not governable; not capable of being governed, ruled, or restrained; licentious; wild; unbridled; as, ungovernable passions.

Thesaurus Entries

beyond control, breachy, contumacious, defiant, disobedient, fractious, incorrigible, indocile, indomitable, insuppressible, intractable, irrepressible, obstreperous, out of hand, rebellious, recalcitrant, refractory, resistant, resisting, restive, shrewish, unbiddable, uncontrollable, unmalleable, unmanageable, unmoldable, unruly, unsubmissive, wild