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adjective, flim·si·er, flim·si·est.
  1. without material strength or solidity: a flimsy fabric; a flimsy structure.
  2. weak; inadequate; not effective or convincing: a flimsy excuse.
noun, plural flim·sies.
  1. a thin kind of paper, especially for use in making several copies at a time of an article, telegraphic dispatch, or the like, as in newspaper work.
  2. a copy of a report or dispatch on such paper.

Origin of flimsy

1695–1705; flim- (perhaps metathetic variant of film) + -sy
Related formsflim·si·ly, adverbflim·si·ness, noun

Synonyms for flimsy

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Antonyms for flimsy

1. sturdy.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

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British Dictionary definitions for flimsy


adjective -sier or -siest
  1. not strong or substantial; fragilea flimsy building
  2. light and thina flimsy dress
  3. unconvincing or inadequate; weaka flimsy excuse
  1. thin paper used for making carbon copies of a letter, etc
  2. a copy made on such paper
  3. a slang word for banknote
Derived Formsflimsily, adverbflimsiness, noun

Word Origin for flimsy

C17: of uncertain origin
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for flimsy

1702, of unknown origin, perhaps a metathesis of film (n.) "gauzy covering" + -y (2). Related: Flimsily; flimsiness.

Online Etymology Dictionary, © 2010 Douglas Harper