Rebellion in state growing (8)
I believe the answer is:
uprising
'rebellion' is the definition.
(synonyms)
'state growing' is the wordplay.
'state' becomes 'up' (I can't justify this - if you can you should give a lot more credence to this answer).
'growing' becomes 'rising' (rising is a kind of growing).
'up'+'rising'='UPRISING'
'in' is the link.
Can you help me to learn more?
(Other definitions for uprising that I've seen before include "revolution" , "Organised opposition to authority" , "Mutiny" , "Insurrection or revolt" , "Rebellion, revolt" .)