Looks like rebel got mixed up with mess (9)
I believe the answer is:
resembles
'looks like' is the definition.
(I've seen this before)
'rebel got mixed up with mess' is the wordplay.
'got mixed up with' indicates an anagram.
'rebel' mixed up with 'mess' makes 'RESEMBLES'.
(Other definitions for resembles that I've seen before include "Bears a likeness to" , "Appears like" , "Looks or seems like" .)