Revolutionary possibly depriving a cardinal of a bit of fun (7)
I believe the answer is:
radical
'revolutionary possibly' is the definition.
(revolutionary is a kind of radical)
'depriving a cardinal of a bit of fun' is the wordplay.
I cannot really understand how this works, but
'a' is present in the answer.
'cardinal' could be 'l' (similar in meaning) and 'l' is found within the answer.
'bit' could be 'i' (resembles 1, a binary digit or bit) and 'i' is present in the answer.
This may be the basis of clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for radical that I've seen before include "Tending towards extreme political views" , "Primitive" , "One seeking root and branch reform" , "Politically extreme" , "Progressive - car dial (anag)" .)