Obtainable (9)
![Ross](/clue/static/ross-mug.min.png)
I believe the answer is:
available
'obtainable' is the definition.
(similar in meaning)
This is all the clue.
(Other definitions for available that I've seen before include "Not otherwise committed" , "Uncommitted" , "on tap" , "Obtainable or accessible" , "Accessible and ready for use" .)