Crossword Genius

One chaste woman goes out in floods (9)

Ross

I believe the answer is:

inundates

'floods' is the definition.
(I know this)

'one chaste woman goes out' is the wordplay.
'one' becomes 'i' (Roman numeral).
'chaste woman' becomes 'nun' (nuns are often celibate).
'goes out' becomes 'dates' (as in dating or going out with someone).
'i'+'nun'+'dates'='INUNDATES'

'in' acts as a link.

(Another definition for inundates that I've seen is " Floods".)

I've seen this clue in The Guardian.
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