Redhead scorns conflict that's based on pure fantasy (7)
I believe the answer is:
fiction
'fantasy' is the definition.
(thesaurus)
'redhead scorns conflict that's based on pure' is the wordplay.
I cannot really understand how this works, but
'on' is within the answer.
This may be the basis of the clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for fiction that I've seen before include "Literary form" , "Invented story" , "Novel writing" , "Piece of writing from the imagination" , "Fabrication" .)