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 lightheaded

Historical Examples of lightheaded

  • I verily believe that at times I was lightheaded in a sort of languid way.

    Some Reminiscences

    Joseph Conrad

  • The captain saw at once that Jack was lightheaded and he humored him.

    The Highgrader

    William MacLeod Raine

  • To be swinging like monkeys from a perch, and ye half sick and lightheaded!


    Mary T. Waggaman

  • In the night he was lightheaded, and all his talk was about you.

  • She was possessed of a strange, almost a lightheaded feeling.


    Dana Gatlin