exclam. a mild exclamation or expression of distress. (Usually Piffle!) : She finished her story, and I looked her straight in the eye and said, “Piffle!”
Dictionary of American Slang and Colloquial Expressions by Richard A. Spears.Fourth Edition. Copyright 2007. Published by McGraw Hill.
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Word Origin & History
piffle
1847, of unknown origin, perhaps an alteration of trifle, by influence of piddle, etc. Or perhaps onomatopoeic of a puff of air, with a dim. suffix.