Father's fur coat is good enough (8)
I believe the answer is:
passable
'good enough' is the definition.
(I've seen this in another clue)
'father's fur coat' is the wordplay.
'father's' becomes 'pa's' (pa can mean dad or father).
'fur coat' becomes 'sable' (I've seen this before).
'pas'+'sable'='PASSABLE'
'is' acts as a link.
(Other definitions for passable that I've seen before include "Good enough to be acceptable" , "Fairly good but not outstanding" , "Fair" , "not hogging the road" , "okay?" .)