Abolish partnership between Princess and the usual extremists (5)
I believe the answer is:
annul
'abolish partnership' is the definition.
'annul' can be an answer for 'abolish' (I've seen this before). I'm unsure of the 'partnership' bit.
'princess and the usual extremists' is the wordplay.
'princess' becomes 'ann' (I can't explain this - if you can you should give a lot more credence to this answer).
'and' is a charade indicator (letters next to each other).
'extremists' suggests removing the centre (letters on the extreme ends of the word).
'usual' with its middle taken out is 'ul'.
'ann'+'ul'='ANNUL'
'between' acts as a link.
Can you help me to learn more?
(Other definitions for annul that I've seen before include "Cancel officially" , "Cancel or render void" , "scratch" , "Cancel, revoke" , "Make invalid" .)