Macbeth, I concede, has principles (5)

I believe the answer is:

ethic

'principles' is the definition.
(thesaurus)

'macbeth i concede has' is the wordplay.
'has' says the answer is hidden in the clue.
'ETHIC' is hidden within 'macbeth i concede'.

(Other definitions for ethic that I've seen before include "type of behaviour" , "Ideology" , "Moral practice" , "Moral system" , "Set of moral values" .)

I've seen this clue in The Telegraph.

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