Stale chop you once fed to Edward (9)
I believe the answer is:
hackneyed
'stale' is the definition.
(thesaurus)
'chop you once fed to edward' is the wordplay.
'chop' becomes 'hack' ('hack' can be a synonym of 'chop').
'you once' becomes 'ye' (I've seen this in other clues).
'fed to' indicates putting letters inside.
'edward' becomes 'ned'.
'ye' going within 'ned' is 'neyed'.
'hack'+'neyed'='HACKNEYED'
(Other definitions for hackneyed that I've seen before include "using familiar phraseology?" , "Overfamiliar through overuse" , "stock" , "Stereotyped" , "Overworked" .)