It's hell! Very angry about country (9)
I believe the answer is:
damnation
'it's hell' is the definition.
(I've seen this before)
'very angry about country' is the wordplay.
'very angry' becomes 'mad' (I've seen this before).
'about' says the letters should be written in reverse.
'country' becomes 'nation' (synonyms).
'mad' written backwards gives 'dam'.
'dam'+'nation'='DAMNATION'
(Other definitions for damnation that I've seen before include "Hopeless situation" , "Eternal punishment" , "27 [HELL]" , "Cursing" , "Infernal punishment" .)