ungovernable (adj.)

• contumacious
• defiant
• disobedient
• fractious
• incorrigible
• indocile
• indomitable
• intractable
• irrepressible
• obstreperous
• rebellious
• recalcitrant
• refractory
• resistant
• resisting
• restive
• shrewish
• uncontrollable
• unmalleable
• unmanageable
• unruly
• unsubmissive
• wild