Liberal or Attlee to put up with (8)
I believe the answer is:
tolerate
'put up with' is the definition.
('tolerate' can be a synonym of 'put up with')
'liberal or attlee' is the wordplay.
'liberal' indicates anagramming the letters.
'or'+'attlee'='orattlee'
'orattlee' anagrammed gives 'TOLERATE'.
'to' is the link.
(Other definitions for tolerate that I've seen before include "Turn a blind eye to" , "Put up with, bear" , "show forbearance" , "Put up with something or somebody" , "Brook" .)