Revolutionary somehow ensuring respect at last (9)
I believe the answer is:
insurgent
'revolutionary' is the definition.
(I've seen this before)
'somehow ensuring respect at last' is the wordplay.
'somehow' indicates anagramming the letters.
'at last' suggests the final letters.
The final letter of 'respect' is 't'.
'ensuring' with letters rearranged gives 'insurgen'.
'insurgen'+'t'='INSURGENT'
(Other definitions for insurgent that I've seen before include "Revolting" , "freedom fighter" , "rising" , "Unresting like a rebel" , "Rebel, revolutionary" .)