Enough, sufficient (8)
I believe the answer is:
adequate
This clue is a double definition.
'enough' is the first definition.
(I know that enough can be written as adequate)
'sufficient' is the second definition.
(similar in meaning)
(Other definitions for adequate that I've seen before include "'Good enough, all right (8)'" , "up to the job?" , "Just about sufficient, acceptable" , "Sufficient or all right" , "Passable; enough" .)