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

  • adj. Behind the times; old-fashioned: Last year's styles will be old hat soon.
  • adj. Overused; trite: That prank is old hat.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. Something with which one is very familiar, or in which one is experienced or skilled.
  • n. Something widely or long practiced, known, or accepted; something conventional.
  • n. Something uninteresting, hackneyed, or passé due to overuse or long-standing familiarity.


Sorry, no etymologies found.


  • It is not like the affair of an old hat cock’d — and a cock’d old hat, about which your reverences have so often been at odds with one another — but there is a difference here in the nature of things —

    The Life and Opinions of Tristram Shandy, Gentleman

  • The lead Spad replied with a statement that seemed old hat to us at the instant but that later took a prominent place in our reconstruction of the puzzzle.

    Thud Ridge


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