somethingth

From something +‎ -th (suffix forming ordinal numerals when the final term of the number is not ‘first’, ‘second’, or ‘third’).

• (Received Pronunciation, General American) IPA^(key): /ˈsʌmθɪŋθ/, (nonstandard) /ˈsʌmθɪŋkθ/

• Audio (Southern England):

  (file)

• Hyphenation: some‧thingth

somethingth (not comparable)

1. (informal) Used to indicate the position of a number which is uncertain or unimportant.

   Synonyms: (nonstandard) how manyth, (nonstandard, rare) whatth

   • 1808, [William Pitt Scargill?], “Bouverie Cottage—Disappointment; The Court-Martial”, in Sketches of Character, or Specimens of Real Life. […], volume III, London: […] [F]or Longman, Hurst, Rees, and Orme, […]; B. Crosby, […]; and J. Lansdown, […], by Mills & Co. […], →OCLC, page 235:

     Weymouth, Sept. the somethingth.

   • 1870 September – 1871 November, George Meredith, “Commencement of the Splendours and Perplexities of My Father’s Grand Parade”, in The Adventures of Harry Richmond. […], volume II, London: Smith, Elder & Co., […], published 1871, →OCLC, page 286:

     "The Emperor Nero," said Janet, "He killed Harry's friend, Seneca [the Younger], in the eighty-somethingth year of his age; an old man, and—hush, grandada!" She could not check him.

   • 1888, R[obert] M[ichael] Ballantyne, “Describes a Few Meetings and Several Surprises”, in Blue Lights: Or Hot Work in the Soudan. […], London: James Nisbet & Co., […], →OCLC, pages 402–403:

     A concert was to take place in the great hall of the Institute for some local charity, we believe, but are not sure, at which the élite of Alexandria was expected, and the musical talent was to perform—among others the band of the something^th Regiment. And let us impress on you, reader, that the band of the something^th Regiment was something to be proud of!

   • 1976 April 19, John Simon, “Old Man Out”, in Clay S[chuette] Felker, editor, New York, volume 9, number 6, New York, N.Y.: New York Media, →ISSN, →OCLC, page 84, column 1:

     Alfred Hitchcock, still chipper at 76, is back with his fifty-somethingth picture—even the experts seem to have lost count, and disagree.

   • 1992, Dick Francis, chapter 1, in Driving Force, London: Michael Joseph, →ISBN, page 11:

     The third son of a baron, he trained for a distantly royal personage thirty-somethingth from the throne, a snob-value combination that had brought him Rich's custom in the first place.

   • 2003, Melvin Goldstein, “The Computer”, in Physics Foibles: A Book for Physics, Math and Computer-science Students, Victoria, B.C.: Trafford Publishing, →ISBN, page 10:

     In 1949, a computer programmed by man calculated the first 2035 digits of Pi and found that [William] Shanks had made an error in the 500-somethingth digit of Pi. This rendered all the following digits (almost 200) of Shanks' Pi in error.

• nth
• umpteenth
• umpty-umpth

• “somethingth, adj.”, in OED Online ⁠, Oxford: Oxford University Press, December 2024.