Believer in God suppressing men, one hypothesises (8)
I believe the answer is:
theorist
'believer in god suppressing men one hypothesises' is the definition.
I can't judge whether this definition defines the answer.
'believer in god suppressing men' is the wordplay.
'believer in god' becomes 'theist' (I've seen this in another clue).
'suppressing' is an insertion indicator.
'men' becomes 'OR' (military abbreviation for Other Ranks).
'theist' enclosing 'or' is 'THEORIST'.
Can you help me to learn more?
(Other definitions for theorist that I've seen before include "Speculator" , "Creator of hypothesis" , "Thinker" , "Expert in established hypotheses" , "Abstract reasoner" .)