Extreme enthusiast (6)
'extreme enthusiast' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for zealot that I've seen before include "Single-minded supporter of a cause" , "A fanatic or extremist" , "Fervent partisan" , "A fanatic or obsessed follower" , "Fanatic person, much too enthusiastic" .)
'extreme enthusiast' is the definition.
(I've seen this before)
This is the entire clue.
(Other definitions for fanatic that I've seen before include "One who is excessively zealous" , "Bigot - enthusiast" , "Extreme enthusiast" , "Person filled with excessive zeal for cause" , "Narrow-minded enthusiast" .)