adjective
- available or convenient for use: 2000 square feet of usable office space.
- capable of being used: That saw is no longer usable.
adjective
- not able or fit to be used
adjective
- able to be used
adj.1825, from un- (1) “not” + usable. adj.late 14c., from Old French usable (early 14c.), from user (see use). Not a common word before c.1840. Related: Usably.