Sign of repetition in pundit tolerated (5)
I believe the answer is:
ditto
'sign of repetition' is the definition.
'in pundit tolerated' is the wordplay.
'in' says the answer is hidden in the clue.
'DITTO' can be found hidden inside 'pundit tolerated'.
(Other definitions for ditto that I've seen before include "As per previous" , "couple of marks" , "Dot it for the same again" , "Same again, indicated by two dots" , "Two dots say same again" .)