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

First recorded in 1530–40; light2 + head + -ed3
Related formslight·head·ed·ly, adverblight·head·ed·ness, noun Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for light-headed

Contemporary Examples of light-headed

Historical Examples of light-headed

  • To bed with you, you canting hypocrite; your wound makes you light-headed.

    The Tavern Knight

    Rafael Sabatini

  • Jon thought the excess of oxygen was making him light-headed.

    Acid Bath

    Vaseleos Garson

  • I verily believe that at times I was light-headed in a sort of languid way.

    A Personal Record

    Joseph Conrad

  • I passed the night in the guardroom, chilled and wet, and now and then light-headed.

    The Making Of A Novelist

    David Christie Murray

  • It was clear even to that light-headed lassie, my niece, at the first glance.

    Red Cap Tales

    Samuel Rutherford Crockett

British Dictionary definitions for light-headed



frivolous in disposition or behaviour
giddy; feeling faint or slightly delirious
Derived Formslight-headedly, adverblight-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

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