Tyrant some Parisian beat up (6)
I believe the answer is:
despot
'tyrant' is the definition.
(synonyms)
'some parisian beat up' is the wordplay.
'some parisian' becomes 'des' ('some' in French).
'beat up' becomes 'pot' (I can't explain this - if you can you should give a lot more credence to this answer).
'des'+'pot'='DESPOT'
Can you help me to learn more?
(Other definitions for despot that I've seen before include "Posted (anag)" , "who treats others badly?" , "nasty ruler?" , "Posted by tyrant" , "monster?" .)