Scorn aid, perhaps, with a sneer (8)
I believe the answer is:
sardonic
'scorn aid perhaps with a sneer' is the definition.
I can't judge whether this definition defines the answer.
'scorn aid perhaps' is the wordplay.
'perhaps' indicates an anagram.
'scorn'+'aid'='scornaid'
'scornaid' with letters rearranged gives 'SARDONIC'.
Can you help me to learn more?
(Other definitions for sardonic that I've seen before include "Cynical -- so rancid (anag)" , "Derisively ironic" , "Tart" , "sneering" , "Scornfully mocking" .)