Acquiescence (9)

I believe the answer is:

agreement

'acquiescence' is the definition.
(thesaurus)

This is all the clue.

(Other definitions for agreement that I've seen before include "Harmony, concurrence" , "Accord, contract" , "Correspondence" , "Pact" , "Harmony or treaty" .)

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

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