Discontented witches? (4)

I believe the answer is:

coen

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'discontented witches?' is the definition.
I know nothing about this answer so I cannot tell whether this works.

'discontented witches?' is the wordplay.
'discontented' suggests removing the centre (the word's contents are removed).
'witches?' becomes 'coven' (a coven is a group of witches).
'coven' with its middle removed is 'COEN'.

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

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