Fancy bun scoffed and not licked! (8)
I believe the answer is:
unbeaten
'not licked' is the definition.
(lick can mean to beat or defeat)
'fancy bun scoffed' is the wordplay.
'fancy' is an anagram indicator.
'scoffed' becomes 'eaten' (I've seen this in other clues).
'bun' with letters rearranged gives 'unb'.
'unb'+'eaten'='UNBEATEN'
'and' acts as a link.
(Other definitions for unbeaten that I've seen before include "all-time" , "Yet to lose" , "like a spoilt child?" , "never surpassed" , "Never having experienced loss" .)