Update it (wasted talent) (8)
I believe the answer is:
aptitude
'talent' is the definition.
(I have seen 'Natural talent ' mean 'aptitude' so perhaps 'talent' could also mean 'aptitude')
'update it wasted' is the wordplay.
'wasted' indicates an anagram.
'update'+'it'='updateit'
'updateit' is an anagram of 'APTITUDE'.
(Other definitions for aptitude that I've seen before include "Inherent ability, natural talent" , "Update it, having a relevant talent" , "Update it, having natural skill" , "Bent" , "faculty" .)