Looks villainous (6)
I believe the answer is:
sneers
'looks villainous' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for sneers that I've seen before include "Expresses cynical contempt" , "Contemptuous or scornful remarks" , "Makes scornful remark, derides" , "Smiles contemptuously" , "Jeers, derides" .)