Legendary wizard was in front (6)
I believe the answer is:
fabled
'legendary' is the definition.
(synonyms)
'wizard was in front' is the wordplay.
'wizard' becomes 'fab' (I can't justify this - if you can you should believe this answer much more).
'was in front' becomes 'led' (I've seen this in another clue).
'fab'+'led'='FABLED'
Can you help me to learn more?
(Other definitions for fabled that I've seen before include "Well-known" , "Enshrined in ancient stories or legends" , "Legendary, mythical" , "noted" , "Mythical; imaginary" .)