Being drug-free, one avoids exploitation (3-4)
I believe the answer is:
non-user
'being drug-free' is the definition.
(someone who does not use drugs)
'one avoids exploitation' is the wordplay.
I cannot really understand how this works, but
'exploitation' could be 'use' (I've seen this in another clue) and 'use' is present in the answer.
This explanation may well be incorrect...
I've seen this clue in The Guardian.
Want a hint initially instead of a full solution?
Install my app