• synonyms


See more synonyms for heedless on Thesaurus.com
  1. careless; thoughtless; unmindful: Heedless of the danger, he returned to the burning building to save his dog.
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Origin of heedless

First recorded in 1570–80; heed + -less
Related formsheed·less·ly, adverbheed·less·ness, noun


See more synonyms for heedless on Thesaurus.com
oblivious, indifferent; negligent, uncaring, unconcerned.


cautious, mindful, heedful.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for heedlessly

Historical Examples

  • Seeing a pier jutting out, he heedlessly followed it to the very end.

    Quaint Courtships


  • His son had been playing with a courtier and the latter had heedlessly wounded him.

  • Therefore it is so sad for us that we go about so heedlessly.

  • He cursed the rising water, and bade it stay—and heedlessly it came on.

    Sir Henry Morgan, Buccaneer

    Cyrus Townsend Brady

  • Then Thornly came to the curtain and flung it heedlessly back.

    Janet of the Dunes

    Harriet T. Comstock

British Dictionary definitions for heedlessly


  1. taking little or no notice; careless or thoughtless
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Derived Formsheedlessly, adverbheedlessness, noun
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 heedlessly



"without regard," 1570s, from heed + -less. Related: Heedlessly; heedlessness.

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Online Etymology Dictionary, © 2010 Douglas Harper