Tolerates, endures (5)
I believe the answer is:
bears
I believe this clue is a double definition.
'tolerates' is the first definition.
('bear' can be a synonym of 'tolerate')
'endures' is the second definition.
('bear' can be a synonym of 'endure')
(Other definitions for bears that I've seen before include "Ursine animals" , "Big animals" , "Massive mammals with shaggy coats" , "Large animals, polar or brown" , "Large animals, polar or grizzly" .)