Cushy (4)
I believe the answer is:
soft
'cushy' is the definition.
(I know that cushy can be written as soft)
This is all the clue.
(Other definitions for soft that I've seen before include "Lenient; not coarse" , "piano?" , "Gentle; non-alcoholic" , "Not hard, rough or harsh" , "Yielding; quiet" .)