Adjectives

(a)operablecapable of being treated by surgical operation“an operable cancer”
(s)functional, usable, useable, operable, operationalfit 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”
(s)operable, practicableusable for a specific purpose“an operable plan”, “a practicable solution”