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[lahyt-hed-id] /ˈlaɪtˈhɛd ɪd/
giddy, dizzy, or delirious:
After two drinks Pat began to feel lightheaded.
having or showing a frivolous or volatile disposition; thoughtless:
lightheaded persons.
Origin of lightheaded
1530-40; light2 + head + -ed3
Related forms
lightheadedly, adverb
lightheadedness, noun Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2016.
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Examples from the Web for light-headed
Contemporary Examples
Historical Examples
  • On light-headed fellows and vagabonds one can place no dependence, and few others are to be found.

  • Flora was not, among other things, frivolous or light-headed.

    The Place of Honeymoons Harold MacGrath
  • I verily believe that at times I was light-headed in a sort of languid way.

    A Personal Record Joseph Conrad
  • He had grown soft, and was light-headed, his knees all of a shake.

  • When I think of the other light-headed duffers who call themselves gentlemen …  Pah!

    The Voice in the Fog Harold MacGrath
  • I passed the night in the guardroom, chilled and wet, and now and then light-headed.

    The Making Of A Novelist David Christie Murray
  • Irene Tackley was a rather pretty young woman, but shallow and light-headed.

  • Your fighting in to-day's battle must have made you light-headed.

    Young Captain Jack Horatio Alger and Arthur M. Winfield
  • A feeling of blind helplessness followed; the sun, beating down fiercely, made him light-headed.

    Half A Chance Frederic S. Isham
British Dictionary definitions for light-headed


frivolous in disposition or behaviour
giddy; feeling faint or slightly delirious
Derived Forms
light-headedly, adverb
light-headedness, 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 light-headed

also lightheaded, "dizzy," 1530s; from light (adj.1) + head (n.). Related: Light-headedness.

Online Etymology Dictionary, © 2010 Douglas Harper
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