Might amaze a lot of them, imprisoning uncompromising militant (6)
I believe the answer is:
zealot
'militant' is the definition.
(thesaurus)
'might amaze a lot of them imprisoning uncompromising' is the wordplay.
'ZEALOT' is hidden within the letters.
But, I'm not sure how this is indicated.
Can you help me to learn more?
(Other definitions for zealot that I've seen before include "Fervent, perhaps militant, proponent" , "A fanatic or obsessed follower" , "A fanatic or over-enthusiastic person" , "Person full of enthusiasm, a fanatic" , "Fanatical believer" .)