Great man out in broadcast debate (13)

I believe the answer is:

argumentation

'debate' is the definition.
(thesaurus)

'great man out in broadcast' is the wordplay.
'broadcast' indicates anagramming the letters (letters scattered or cast around).
'great'+'man'+'out'+'in'='greatmanoutin'
'greatmanoutin' with letters rearranged gives 'ARGUMENTATION'.

I've seen this clue in The Times.

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