Gets agreed negotiation set aside (10)

I believe the answer is:

segregated

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'set aside' is the definition.
Both the definition and answer are adjectives. Perhaps there's an association between them I don't understand?

'gets agreed negotiation' is the wordplay.
'negotiation' is an anagram indicator.
'gets'+'agreed'='getsagreed'
'getsagreed' with letters rearranged gives 'SEGREGATED'.

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

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