Relative violently anti-Greece (5-5)

I believe the answer is:

great-niece

'relative' is the definition.
(I've seen this before)

'violently anti-greece' is the wordplay.
'violently' indicates anagramming the letters (letters are violently disrupted).
'anti'+'greece'='antigreece'
'antigreece' with letters rearranged gives 'GREAT-NIECE'.

I've seen this clue in The Times.

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