Avid (5)
'avid' is the definition.
(synonyms)
This is the entire clue.
(Other definitions for eager that I've seen before include "Enthusiastic, full of desire" , "Desperate" , "It's a bore" , "Enthusiastic, avid" , "Anxious" .)
'avid' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for keen that I've seen before include "Sharp - avid" , "Sharp -- express grief" , "Innumerable" , "Eager; dirge" , "Razor-edged" .)