Passion seen in counter-revolution (4)
I believe the answer is:
love
'passion' is the definition.
(I know that passion can be written as love)
'in counter-revolution' is the wordplay.
'counter' says the letters should be written backwards.
'in' indicates a hidden word.
'evol' is hidden in the letters of 'revolution'.
'evol' written backwards gives 'LOVE'.
'seen' acts as a link.
(Other definitions for love that I've seen before include "Adoration" , "Passion" , "God of 20 Dn" , "See 4" , "Fondness" .)