For most of November it can be very upsetting (5)
I believe the answer is:
venom
'for most of november it' is the definition.
I can't tell whether this definition defines the answer.
'be very upsetting' is the wordplay.
'be' becomes 'mone' (I can't explain this - if you can you should give a lot more credence to this answer).
'very' becomes 'v' (common abbreviation).
'upsetting' shows that the letters should be reversed in order.
'mone'+'v'='monev'
'monev' reversed gives 'VENOM'.
'can' acts as a link.
Can you help me to learn more?
(Other definitions for venom that I've seen before include "bitterness" , "Poison; malice" , "Toxic substance" , "Poisonous fluid" , "Virulence" .)
