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

  • adj. Not marked with or showing a date: an undated letter; an undated portrait.
  • adj. Being such as to have long-lasting appeal without ever going out of style: a classic, undated dress.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • adj. not marked with a date
  • adj. of a style that will not go out of fashion; a classic

from the GNU version of the Collaborative International Dictionary of English

  • adj. Rising and falling in waves toward the margin, as a leaf; waved.
  • adj. Not dated; having no date; of unknown age.

from The Century Dictionary and Cyclopedia

  • Not dated; having no date: as, an undated letter or bill.
  • Having a waved surface; rising and falling in waves toward the margin, as a leaf; waved. Also undate.
  • In heraldry, same as undé.
  • In botany, same as undulate.

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

  • adj. not bearing a date


Sorry, no etymologies found.


  • It's an interesting, unpretentious, receptive personal literary experiment (pdf excerpt here), and Halliday's surprise takeaway is how remarkably, vibrantly "undated" most of the contents of Hudson Review summer '63 are.

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  • There are several copies listed in both places as "undated" and "reprints" -- I'm avoiding these, since while it's quite likely that they might be clearable, I'm not taking risks on this search.

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  • The new set of booklets are undated, meaning they can be used every year.

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  • Saif al-Adel is pictured in an undated file handout photo from the FBI.

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  • The “post mortem” flavour of the Red and Blue Jackies of July – August 1964, in particular, largely derives from the fact that Andy started with the cover photograph of an undated official 50¢ White House souvenir booklet entitled Jacqueline Kennedy, First Lady: Her Fashions, Her Home, Her Words.

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  • In her undated recommendation of eliminations for 1932's "Red Headed Woman," starring Jean Harlow as a randy stenographer, the professional viewer invoked sisterhood of a kind in laying blame for the film's inappropriateness at the feet of director Jack Conway rather than Harlow.

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  • Facebook An undated photo of Levi Aron Detectives following video leads traced Mr. Aron to the dentist's office, which determined Wednesday that the suspect had paid a bill with a credit card at about 5:30 p.m.

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  • Kevin B. McManus relaxes with a cigar by a pool in an undated photo.

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  • The document, which was undated but appeared to be drafted before October 20, estimated that under tested scenarios, "there is sufficient liquidity to manage through one month under a severe stress event."

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  • Associated Press This undated photo made available by CNN, shows Piers Morgan, left, host of 'Piers Morgan Tonight' interviewing Condoleeza Rice.

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