Hypersensitive and intolerant Eurosceptics in charge after all! (8)
I believe the answer is:
allergic
'hypersensitive' is the definition.
(synonyms)
'eurosceptics in charge after all' is the wordplay.
'eurosceptics' becomes 'erg' (I can't explain this - if you can you should give a lot more credence to this answer).
'in charge' becomes 'ic' (abbreviation for 'in charge').
'after' is a charade indicator (letters next to each other).
'erg'+'ic'='ergic'
'ergic' after 'all' is 'ALLERGIC'.
'and intolerant' acts as a link.
This may not be correct. Some or all of it may be part of another bit of the clue.
Can you help me to learn more?
(Other definitions for allergic that I've seen before include "Reacting (to certain substances)" , "Reacting badly to certain things" , "Hypersensitive (to certain substances)" , "Reacting badly (to something)" , "Hypersensitive to something" .)