Some sort of aspirant guerrilla (8)

I believe the answer is:

partisan

'guerrilla' is the definition.
(I've seen this before)

'some sort of aspirant' is the wordplay.
'some sort of' indicates anagramming the letters.
'aspirant' anagrammed gives 'PARTISAN'.

(Other definitions for partisan that I've seen before include "Resistance fighter" , "Devotee of a cause" , "Inclining to one side" , "Muslim call to prayer" , "Guerrilla" .)

I've seen this clue in The Independent.

Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.