City on the French Riviera (6)
I believe the answer is:
cannes
'city on the french riviera' is the definition.
(I've seen this before)
This is the entire clue.
(Other definitions for cannes that I've seen before include "City in the French Riviera" , "French city with annual film festival - sounds permissive" , "South of France resort" , "Nice neighbour" , "Film festival resort on the French Riviera" .)