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[heed-lis] /ˈhid lɪs/
careless; thoughtless; unmindful:
Heedless of the danger, he returned to the burning building to save his dog.
Origin of heedless
First recorded in 1570-80; heed + -less
Related forms
heedlessly, adverb
heedlessness, noun
oblivious, indifferent; negligent, uncaring, unconcerned.
cautious, mindful, heedful. Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2017.
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Examples from the Web for heedless
Contemporary Examples
Historical Examples
  • The two men bent to the task, heedless of Mary's frantic protest.

    Within the Law Marvin Dana
  • She was heedless of the familiar scene, the figures grouped about her.

    The Bacillus of Beauty Harriet Stark
  • They staggered and trembled in every shaking limb, heedless now of the Earthmen.

    Slaves of Mercury Nat Schachner
  • Imogen was not heedless and indiscreet; she would not have sacrificed the dignity of innocence.

    Imogen William Godwin
  • One moment of heedless inconsideration may plunge thee in years of calamity.

    Imogen William Godwin
British Dictionary definitions for heedless


taking little or no notice; careless or thoughtless
Derived Forms
heedlessly, adverb
heedlessness, 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
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Word Origin and History for heedless

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

Online Etymology Dictionary, © 2010 Douglas Harper
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