from The American Heritage® Dictionary of the English Language, 5th Edition.

  • adjective Having a reeling, lightheaded sensation; dizzy.
  • adjective Causing or capable of causing dizziness.
  • adjective Frivolous and lighthearted; flighty.
  • intransitive & transitive verb To become or make giddy.

from The Century Dictionary.

  • Foolishly light or frivolous; governed by wild or thoughtless impulses; manifesting exuberant spirits or levity; flighty; heedless.
  • Characterized by or indicating giddiness or levity of feeling.
  • Affected with vertigo, or a swimming sensation in the head, causing liability to reel or fall; dizzy; reeling: as, to be giddy from fever or drunkenness, or in looking down from a great height.
  • Adapted to cause or to suggest giddiness; of a dizzy or dizzying nature; acting or causing to act giddily.
  • = Syn. 1 and 2. Careless, reckless, headlong, flighty, hare-brained, light-headed.
  • To make dizzy or unsteady.
  • To turn quickly; reel.

from the GNU version of the Collaborative International Dictionary of English.

  • transitive verb obsolete To make dizzy or unsteady.
  • intransitive verb To reel; to whirl.
  • adjective Having in the head a sensation of whirling or reeling about; having lost the power of preserving the balance of the body, and therefore wavering and inclined to fall; lightheaded; dizzy.
  • adjective Promoting or inducing giddiness
  • adjective Bewildering on account of rapid turning; running round with celerity; gyratory; whirling.
  • adjective Characterized by inconstancy; unstable; changeable; fickle; wild; thoughtless; heedless.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • adjective dizzy, feeling dizzy or unsteady and as if about to fall down
  • adjective causing dizziness: causing dizziness or a feeling of unsteadiness
  • adjective lightheartedly silly, or joyfully elated
  • adjective archaic Frivolous, impulsive, inconsistent, changeable.
  • verb obsolete, transitive To make dizzy or unsteady.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • adjective having or causing a whirling sensation; liable to falling
  • adjective lacking seriousness; given to frivolity


from The American Heritage® Dictionary of the English Language, 4th Edition

[Middle English gidi, crazy, from Old English gidig; see gheu(ə)- in Indo-European roots.]

from Wiktionary, Creative Commons Attribution/Share-Alike License

From Middle English gidi, gydi ("foolish"), from Old English gydiġ ("possessed by a spirit or demon, mad, insane"), from Proto-Germanic *gudīgaz (“ghostly, spirited”), equivalent to god +‎ -y.


Help support Wordnik (and make this page ad-free) by adopting the word giddy.



Log in or sign up to get involved in the conversation. It's quick and easy.