Puts up with certain speculators (5)
I believe the answer is:
bears
'puts up with' is the definition.
('bear' can be a synonym of 'put up with')
I cannot understand how the remainder of the clue works.
Can you help me to learn more?
(Other definitions for bears that I've seen before include "Carries" , "Large animals, polar or brown" , "Ursine animals" , "Large animals, polar or grizzly" , "Big animals" .)