Seller drove recklessly around north (6)
I believe the answer is:
vendor
'seller' is the definition.
(I know that seller can be written as vendor)
'drove recklessly around north' is the wordplay.
'recklessly' indicates an anagram.
'around' is an insertion indicator.
'north' becomes 'N' (synonyms).
'drove' with letters rearranged gives 'vedor'.
'vedor' going around 'n' is 'VENDOR'.
(Other definitions for vendor that I've seen before include "A Latin seller" , "who does business?" , "Seller, trader (O, not E)" , "One flogging" , "Salesperson" .)