Grinch's creator (5)
I believe the answer is:
seuss
'grinch's creator' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for seuss that I've seen before include "Dr -, children's author (The Cat in the Hat)" , "Dr. --, US children's author" , "8 [DOCTOR]" .)