Source : WordNet®

useable
     adj 1: 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}, {in working order(p)}, {operable},
             {operational}]
     2: able to be put to use; "usable byproducts" [syn: {usable}]
     3: convenient for use or disposal; "the house is available
        after July 1"; "2000 square feet of usable office space"
        [syn: {available}, {usable}]