controllable

from WordNet (r) 3.0 (2006)

controllable
    adj 1: capable of being controlled [syn: {controllable},
           {governable}]

from The Collaborative International Dictionary of English v.0.48

Controllable \Con*trol"la*ble\, a.
   Capable of being controlled, checked, or restrained; amenable
   to command.
   [1913 Webster]

         Passion is the drunkeness of the mind, and, therefore,
         . . . not always controllable by reason. --South.
   [1913 Webster]