Aggressive stylist ruined Evita (9)

I believe the answer is:

combative

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'aggressive' is the definition.
(similar in meaning)

'stylist ruined evita' is the wordplay.
'stylist' becomes 'comb' (I can't justify this - if you can you should believe this answer much more).
'ruined' indicates anagramming the letters.
'evita' anagrammed gives 'ative'.
'comb'+'ative'='COMBATIVE'

Can you help me to learn more?

(Other definitions for combative that I've seen before include "Eager to fight, aggressive" , "Pugnacious" .)

I've seen this clue in The Daily Express.

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