Overdone (5)
I believe the answer is:
trite
'overdone' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for trite that I've seen before include "repeated too often" , "Banal, commonplace" , "Overfamiliar through overuse" , "Dull, unoriginal" , "(Of an idea) lacking in originality" .)