Cutting
'cutting' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for snide that I've seen before include "Unpleasantly mocking" , "Maliciously derogatory" , "such remarks aren't nice" , "Slyly derogatory" , "Sarcastic" .)
'cutting' is the definition.
(I know that cutting can be written as keen)
This is all the clue.
(Other definitions for keen that I've seen before include "mourn for the departed" , "(Of a blade) sharp" , "Agog" , "Sharp - lament" , "Sharp - eager" .)