Wit (3)
'wit' is the definition.
(synonyms)
This is the entire clue.
(Other definitions for wag that I've seen before include "Person fond of tricks and playing jokes" , "Move briskly to and fro" , "Accompanying lovely" , "Move from side to side like dog's tail" , "Habitual joker or a wit" .)
'wit' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for wisecracker that I've seen before include "joker" , "Wit" , "Witty fellow" .)