Cure not originally presented is easily best (7)
I believe the answer is:
trounce
'is easily best' is the definition.
(I've seen this before)
'cure not originally' is the wordplay.
'originally' is an anagram indicator.
'cure'+'not'='curenot'
'curenot' with letters rearranged gives 'TROUNCE'.
'presented' is the link.
(Other definitions for trounce that I've seen before include "Defeat heavily (in contest)" , "Beat thoroughly on recount" , "Easily best" , "Beat heavily" , "Flog" .)