Decent — right (7)
I believe the answer is:
ethical
I believe this clue is a double definition.
'decent' is the first definition.
(thesaurus)
'right' is the second definition.
(similar in meaning)
(Other definitions for ethical that I've seen before include "Moral, honest" , "Morally correct, honourable" , "not advertised to the general public" , "lt's available on prescription only" , "Morally good or correct" .)