Outdo (7)
'outdo' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for eclipse that I've seen before include "Total - - of the sun" , "Surpass, outshine" , "Blot out" , "Hiding of one body by another" , "Heavenly phenomenon" .)
'outdo' is the definition.
(synonyms)
This is all the clue.
(Other definitions for surpass that I've seen before include "Exceed" , "Be better than (another)" , "Excel" , "Be better than (own best)" , "Outdo" .)
'outdo' is the definition.
(bettering is a kind of outdoing)
This is the entire clue.
(Other definitions for better that I've seen before include "Recovered from illness - more satisfactory" , "punter" , "Preferable" , "Improved - gambler" , "Gambler; cured" .)