Lost breath reorganising engagements (10)

I believe the answer is:

betrothals

'engagements' is the definition.
('betrothal' can be a synonym of 'engagement')

'lost breath reorganising' is the wordplay.
'reorganising' indicates anagramming the letters (reorganising the letters).
'lost'+'breath'='lostbreath'
'lostbreath' is an anagram of 'BETROTHALS'.

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

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