A revolting fellow? (5)
I believe the answer is:
rebel
'a revolting fellow?' is the definition.
The definition and answer can be both people as well as being singular nouns.
Maybe they are linked in a way I don't understand?
This is all the clue.
Can you help me to learn more?
(Other definitions for rebel that I've seen before include "He resists authority" , "Insurgent, mutineer" , "Rejector of authority" , "One who rises up" , "Rise up (without a cause?)" .)