Examples from the Web for useable
Tavis Smiley, the PBS talk show host and close friend to Cornel West, often credits West with having a “useable intellect.”
Most of the sewage can be converted to useable agricultural water.
How did the Indian civilizations of the New World learn to harden gold into a useable point for a cutting weapon?The Time Traders|Andre Norton
Each has a useable length of 1000 feet, a useable width of 110 feet.South America Observations and Impressions|James Bryce
Not all of them were well made, but most of them were useable for stage traffic which had greatly increased.Montreal 1535-1914, Volume II (of 2)|William Henry Atherton
For silk dyeing the above soap is suitable, although any well-made soap of good odor and not rancid is useable.Soap-Making Manual|E. G. Thomssen
In this instance a plea was entered for a useable small unit rate as against the wholesale charge.Railroads: Rates and Regulations|William Z. Ripley
British Dictionary definitions for useable
Word Origin and History for useable
late 14c., from Old French usable (early 14c.), from user (see use). Not a common word before c.1840. Related: Usably.