Bear punishment (5)
I believe the answer is:
stick
I believe this clue is a double definition.
'bear' is the first definition.
(to stick with something is to bear it)
'punishment' is the second definition.
(I know that stick is a type of punishment)
(Other definitions for stick that I've seen before include "Rod" , "See 2" , "Switch < put up" , "heavy criticism" , "Cane; criticism" .)