Sobriquets (9)
I believe the answer is:
nicknames
'sobriquets' is the definition.
('nickname' can be a synonym of 'sobriquet')
This is the entire clue.
(Other definitions for nicknames that I've seen before include "Familiar or affectionate add-on appellations" , "Handles" , "sobriquets" , "Monikers" , "Chalky and Shorty, for instance" .)