Source : Webster's Revised Unabridged Dictionary (1913)

Manageable \Man"age*a*ble\, a.
   Such as can be managed or used; suffering control;
   governable; tractable; subservient; as, a manageable horse.

   Syn: Governable; tractable; controllable; docile. --
        {Man"age*a*ble*ness}, n. -- {Man"age*a*bly}, adv.

Source : WordNet®

manageable
     adj 1: easy to handle or use or manage; "a large but wieldy book"
            [syn: {wieldy}] [ant: {unwieldy}]
     2: capable of being managed or controlled [ant: {unmanageable}]
     3: easily dealt with; "manageable problems"