Sensational writer had written out immortal dates (13)

I believe the answer is:

melodramatist

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'sensational writer had written' is the definition.
I can't tell whether this definition defines the answer.

'out immortal dates' is the wordplay.
'out' is an anagram indicator.
'immortal'+'dates'='immortaldates'
'immortaldates' anagrammed gives 'MELODRAMATIST'.

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I've seen this clue in the Sydney Morning Herald.

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