One woman returns to fool (5)

I believe the answer is:

idiot

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'to fool' is the definition.
(synonyms)

'one woman returns' is the wordplay.
'one' becomes 'toi' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'woman' becomes 'Di' (short for Diana).
'returns' shows that the letters should be reversed in order.
'toi'+'di'='toidi'
'toidi' reversed gives 'IDIOT'.

Can you help me to learn more?

(Other definitions for idiot that I've seen before include "eg Dostoevski's Myshkin" , "Dolt" , "Silly ass" , "Dope" , "Sap" .)

I've seen this clue in The Mirror.

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