Moral rule put in French and in Latin here (5)
I believe the answer is:
ethic
'moral rule' is the definition.
(I've seen this before)
'in french and in latin here' is the wordplay.
'in french' becomes 'et' (I've seen this in other clues).
'and' is a charade indicator (letters next to each other).
'in latin here' becomes 'hic' (I am not sure about this - if you are sure you should believe this answer much more).
'et'+'hic'='ETHIC'
'put' acts as a link.
Can you help me to learn more?
(Other definitions for ethic that I've seen before include "Moral system" , "Moral code" , "set of morals" , "Code of principles" , "Moral value" .)