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See more synonyms for foolhardy on Thesaurus.com
adjective, fool·har·di·er, fool·har·di·est.
  1. recklessly or thoughtlessly bold; foolishly rash or venturesome.
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Origin of foolhardy

1175–1225; Middle English folhardy < Old French fol hardi. See fool1, hardy1
Related formsfool·har·di·ly, adverbfool·har·di·ness, noun


See more synonyms for foolhardy on Thesaurus.com
impetuous, headlong, heedless, incautious.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for foolhardiness

Contemporary Examples

Historical Examples

  • Better as it is: over-caution is as great an error as foolhardiness.

    Roland Cashel

    Charles James Lever

  • On the top of a hill near by Peter bemoaned his losses and, it is said, his foolhardiness.

    Peter the Hermit

    Daniel A. Goodsell

  • How many lives are lost through ignorance and foolhardiness!

    Hunter's Marjory

    Margaret Bruce Clarke

  • He said he saw nothing in it but foolhardiness and vain-glory.


    Juliana Horatio Ewing

  • To do these things without sufficient reason is foolhardiness.

    Practical Ethics

    William DeWitt Hyde

British Dictionary definitions for foolhardiness


adjective -hardier or -hardiest
  1. heedlessly rash or adventurous
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Derived Formsfoolhardily, adverbfoolhardiness, noun

Word Origin

C13: from Old French fol hardi, from fol foolish + hardi bold
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 foolhardiness



early 13c., from fool (n.) + Middle English hardi "bold;" hence "foolishly brave" (see hardy). Cf. Old French fol hardi.

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Online Etymology Dictionary, © 2010 Douglas Harper