Usable means in a state where it can be used. Still usable, a usable surface, usable data.
It sets a low bar and says so: usable means functional rather than good. In design, usability is a whole discipline measuring how easily people can actually do things with something, and the finding that nearly always holds is that testing with five users finds most of the problems. Note the spelling useable, which is also correct and less common.
1adjectiveusableIn a state where it can be used.
“The old printer is still usable, but it's very slow.”
usable is a quality of being fit for use.
Old French usable comes from user, to use, from Latin uti. Utility, usual and utensil come from the same using.
Old French
usable
English, today
usable
Built from
From Old French usable, from the verb user (“to use”).
Etymology from Wiktionary, CC BY-SA