Lively caper with bread for each person (3,6)
I believe the answer is:
per capita
'for each person' is the definition.
(synonyms)
'lively caper with bread' is the wordplay.
'lively' is an anagram indicator (letters get livened up or moved around).
'with' is a charade indicator (letters next to each other).
'bread' becomes 'pita' (pita is a kind of bread).
'caper' with letters rearranged gives 'perca'.
'perca'+'pita'='PER CAPITA'
(Other definitions for per capita that I've seen before include "A head" , "apiece" , "For each person - in routine Latin phrase" .)