Somehow enrol a recluse (5)
I believe the answer is:
loner
'a recluse' is the definition.
(thesaurus)
'somehow enrol' is the wordplay.
'somehow' indicates an anagram.
'enrol' anagrammed gives 'LONER'.
(Other definitions for loner that I've seen before include "Person who prefers his own company" , "Isolated individual" , "Unsociable person" , "One preferring own company" , "person, one hating company" .)