Revolutionary endlessly afflicted (5)
I believe the answer is:
paine
'revolutionary' is the definition.
(I know that Paine was a revolutionary)
'endlessly afflicted' is the wordplay.
'endlessly' means to remove the last letter.
'afflicted' becomes 'pained' ('pain' can be a synonym of 'afflict').
'pained' with its last letter removed is 'PAINE'.
(Other definitions for paine that I've seen before include "Radical writer called 12" , "Thomas ....., American author of 'The Rights of Man'" , "Tom - - , revolutionary" .)