I put date off, revealing talent (8)
I believe the answer is:
aptitude
'talent' is the definition.
(I know that talent is a aptitude)
'i put date off' is the wordplay.
'off' indicates anagramming the letters.
'i'+'put'+'date'='iputdate'
'iputdate' is an anagram of 'APTITUDE'.
'revealing' is the link.
(Other definitions for aptitude that I've seen before include "Update it, having a relevant talent" , "capacity" , "A natural talent or skill, for which there may be a test" , "A particular talent or facility" , "Bent" .)