A farmer and reaper initially long way off (4)
I believe the answer is:
afar
'long way off' is the definition.
(I've seen this before)
'a farmer and reaper initially' is the wordplay.
'initially' suggests taking the first letters.
The first letters of 'farmer and reaper' is 'far'.
'a'+'far'='AFAR'
(Other definitions for afar that I've seen before include "Many a mile" , "At a distance (poetic)" , "A long distance away" , "Unusually distant" , "Distant parts" .)