Frisky pair, later on common (11)
I believe the answer is:
proletarian
'common' is the definition.
(thesaurus)
'frisky pair later on' is the wordplay.
'frisky' indicates an anagram.
'pair'+'later'+'on'='pairlateron'
'pairlateron' with letters rearranged gives 'PROLETARIAN'.
(Other definitions for proletarian that I've seen before include "Ordinary worker (Marxism)" , "Working-class" , "Characteristic of the working class" , "Relating to the workers" .)