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3. be as clean as a whistle

be as clean as a whistle

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be as clean as a whistle

if someone is as clean as a whistle, they are not involved in anything illegal He hasn't got a criminal record - he's clean as a whistle.

See also: clean, whistle

be as clean as a whistle

  also be as clean as a new pin

to be very clean The café's as clean as a whistle, and the food's excellent.

See also: clean, whistle