Solitary type (5)
I believe the answer is:
loner
'solitary type' is the definition.
(I've seen this before)
This is the entire clue.
(Other definitions for loner that I've seen before include "Solitary individual, prefers own company" , "One liking solitude" , "Isolated person" , "One not desiring companionship" , "Recluse" .)