Crossword Genius

Loosen at peacekeepers party (4)

Ross

I believe the answer is:

undo

'loosen' is the definition.
(I've seen this before)

'at peacekeepers party' is the wordplay.
'at' is a charade indicator (letters next to each other).
'peacekeepers' becomes 'un'.
'party' becomes 'do' (do is a kind of party).
'un'+'do' is 'UNDO'.

(Other definitions for undo that I've seen before include "Unfasten or annul" , "Ruin or loose" , "Spoil" , "Loosen; cancel" , "Unfasten, loosen" .)

I've seen this clue in The Mirror.
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