Moral philosopher, dishonest pig (7)

I believe the answer is:

bentham

'moral philosopher' is the definition.
(Jeremy Bentham, 1748-1832, the English philosopher)

'dishonest pig' is the wordplay.
'dishonest' becomes 'bent' (I've seen this before).
'pig' becomes 'ham'.
'bent'+'ham'='BENTHAM'

(Another definition for bentham that I've seen is " Jeremy ---, utilitarian philosopher".)

I've seen this clue in The Everyman puzzle in The Observer.

Want a hint initially instead of a full solution? Install my app