[syn: operable, practicable]
The Collaborative International Dictionary of English v.0.48:
Operable \Op"er*a*ble\, a.
   Practicable. [Obs.]
   [1913 Webster]
WordNet (r) 3.0 (2006):
operable
    adj 1: capable of being treated by surgical operation; "an
           operable cancer" [ant: inoperable]
    2: fit or ready for use or service; "the toaster was still
       functional even after being dropped"; "the lawnmower is a bit
       rusty but still usable"; "an operational aircraft"; "the
       dishwasher is now in working order" [syn: functional,
       usable, useable, operable, operational]
    3: usable for a specific purpose; "an operable plan"; "a
       practicable solution" [syn: operable, practicable]
Moby Thesaurus II by Grady Ward, 1.0:
39 Moby Thesaurus words for "operable":
   achievable, actable, appliable, applicable, attainable, banausic,
   compassable, compliant, doable, effective, effectual, efficient,
   exploitable, feasible, fit, functional, in working order,
   manageable, maneuverable, manipulable, manipulatable, negotiable,
   operatable, operational, overcomable, performable, pliable,
   practicable, practical, pragmatic, realizable, reusable,
   serviceable, superable, surmountable, usable, utilizable, viable,
   workable