Recluse has more time without golf (5)
I believe the answer is:
loner
'recluse' is the definition.
(lonely or isolated person)
'has more time without golf' is the wordplay.
'has more time' becomes 'longer' (longer in duration).
'without' is a deletion indicator.
'golf' becomes 'g' (phonetic alphabet: alpha, bravo, charlie etc.).
'longer' with 'g' removed is 'LONER'.
(Other definitions for loner that I've seen before include "Recluse" , "One preferring own company" , "Isolated person" , "Isolated individual" , "One not desiring companionship" .)