English mostly snigger about that French behavioural code (9)
I believe the answer is:
etiquette
This clue might be a double definition.
'english mostly snigger about that french' is the first definition.
The definition and answer can be both related to communication as well as being singular nouns.
Perhaps there's an association between them I don't understand?
'behavioural code' is the second definition.
(I've seen this before)
Can you help me to learn more?
(Other definitions for etiquette that I've seen before include "Conventions of courtesy" , "Manners" , "Conventional courtesy" , "Rules of correct social behaviour" , "Behavioural code" .)