Expression of contempt (5)
'expression of contempt' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for bah that I've seen before include "''...! Humbug!'' (Scrooge)" , "Disbelieving expression" , "Appalling!" , "Exclamation of contempt or disgust - Scrooge used to say it" , "Comic expression of contempt" .)
'expression of contempt' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for sneer that I've seen before include "Contemptuous or mocking smile" , "Deride, jeer" , "Express cynical contempt" , "Curl one's lip" , "Contemptuous expression" .)