Antisocial type (5)
I believe the answer is:
loner
'antisocial type' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for loner that I've seen before include "One preferring to act individually" , "Antisocial person" , "One shunning society" , "Solitary person" , "Person shunning company" .)