Main entry: operable
Definition: capable of being treated by surgical operation
Usage: an operable cancer
Main entry: operable, practicable
Definition: usable for a specific purpose
Usage: an operable plan; a practicable solution
Main entry: usable, useable, functional, operable, operational
Definition: fit or ready for use or service
Usage: 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