Nasty ways to die, possibly (5)
I believe the answer is:
snide
'nasty' is the definition.
(I've seen this in another clue)
'ways to die possibly' is the wordplay.
'ways' becomes 'sn' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'possibly' is an anagram indicator.
'die' anagrammed gives 'ide'.
'sn'+'ide'='SNIDE'
Can you help me to learn more?
(Other definitions for snide that I've seen before include "Sarcastic" , "Sneering in a sly way - dines out on it" , "Dines (anag.)" , "Indirectly mocking" , "Maliciously mocking" .)