Grouchy Muppet (5)
I believe the answer is:
oscar
'grouchy muppet' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for oscar that I've seen before include "- - Peterson, pianist" , "Film prize" , "Annual film award" , "Statuette awarded by Hollywood Academy" , "- - Hammerstein (musicals)" .)