Suffer prolonged pain, like a revolutionary (4)

I believe the answer is:

ache

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'suffer prolonged pain' is the definition.
'ache' can be an answer for 'suffer' (synonyms). I am not certain of the 'prolonged pain' bit.

'a revolutionary' is the wordplay.
'revolutionary' becomes 'che' (Che Guevara the Marxist revolutionary).
'a'+'che'='ACHE'

'like' is the link.

Can you help me to learn more?

(Other definitions for ache that I've seen before include "Dull prolonged pain" , "Shakespearean character" , "Similar" , "Hurt; yearn" , "Feel pain" .)

I've seen this clue in The Irish Times.

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