It's a bad look (5)
I believe the answer is:
sneer
'it's a bad look' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for sneer that I've seen before include "Show contempt with scornful expression or words" , "A scornful expression or remark" , "Dig" , "Express cynical contempt" , "Contemptuous gesture" .)