Crossword Genius

City lenders I upset in tactless manner (12)

Ross

I believe the answer is:

indiscreetly

'in tactless manner' is the definition.

'city lenders i upset' is the wordplay.
'upset' indicates anagramming the letters.
'city'+'lenders'+'i'='citylendersi'
'citylendersi' anagrammed gives 'INDISCREETLY'.

I've seen this clue in The Times.
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