In France we must keep on rebelling, very excitable (7)
I believe the answer is:
nervous
'excitable' is the definition.
(similar in meaning)
'in france we must keep on rebelling very' is the wordplay.
'in france we' becomes 'nous' ('we' in French).
'must keep' is an insertion indicator.
'on rebelling' becomes 'er' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'very' becomes 'v' (common abbreviation).
'er'+'v'='erv'
'nous' going around 'erv' is 'NERVOUS'.
Can you help me to learn more?
(Other definitions for nervous that I've seen before include "far from cool?" , "Easily alarmed" , "Anxious or apprehensive" , "Fidgety" , "Jumpy" .)