Being moral is remarkably un-piratical (11)
I believe the answer is:
puritanical
'being moral' is the definition.
Both the answer and definition are adjectives. Maybe there's an association between them I don't understand?
'remarkably un-piratical' is the wordplay.
'remarkably' indicates anagramming the letters (I've seen this in other clues).
'un'+'piratical'='unpiratical'
'unpiratical' with letters rearranged gives 'PURITANICAL'.
'is' acts as a link.
Can you help me to learn more?
(Other definitions for puritanical that I've seen before include "Far from rude" , "Strict-minded" , "likely to curtail pleasure" , "Strictly moral in conduct" , "moralistic" .)