How to Use undefined in a Sentence

undefined

adjective
  • And when a point is on a line, those are the undefined concepts.
    Steven Strogatz, Quanta Magazine, 19 Apr. 2023
  • The rest of her hair flowed around her in undefined curls that have just the right amount of frizz.
    Gabi Thorne, Allure, 2 May 2022
  • But what that pushback might look like was vague and undefined.
    Bryan Schott, The Salt Lake Tribune, 15 Sep. 2021
  • But with just two years to go, much remains undefined.
    Rhonda Richford, Footwear News, 3 Sep. 2019
  • There is much to be gained from indulging in the undefined every once in a blue moon.
    Tarot.com, Baltimore Sun, 17 Mar. 2024
  • The idea is of the border as a limbic space, an undefined space, a strange space.
    Holly Jones, Variety, 7 Aug. 2023
  • But these are not broad scale mask mandates across the country for undefined amounts of time.
    Abc News, ABC News, 19 July 2022
  • As for the third … well, better to leave that undefined, for others to fill in.
    Ellen Cushing, The Atlantic, 15 May 2020
  • The top players’ form is patchy or simply undefined.
    Ava Wallace, New York Times, 27 June 2026
  • And when a point is between two other points on a line, those are undefined concepts.
    Steven Strogatz, Quanta Magazine, 19 Apr. 2023
  • The frogs were marked as undefined species in the Craugastor genus.
    Elizabeth Gamillo, Smithsonian Magazine, 6 May 2022
  • In the video, a small undefined object appears to be flying low, at a high rate of speed above the ocean.
    Andrew Dyer, San Diego Union-Tribune, 29 May 2021
  • Roles were undefined and the result was a team that looked like it was assembled from parts bought at a yard sale.
    Kent Somers, azcentral, 21 Feb. 2020
  • That's why as the plant blooms, the glass becomes blurry and fogged, and the leaves take on a more undefined and vivid form.
    Melissah Yang, refinery29.com, 16 May 2022
  • The younger Bayh is largely undefined.
    Hayleigh Colombo, IndyStar, 19 Aug. 2025
  • Rather than letting life slide by in an undefined haze, prayer punctuates our hours, our days, and our weeks.
    Avital Chizhik-Goldschmidt, Vox, 8 July 2019
  • One of its mysteries, though, has been what a large, undefined slot on the back of the console will be used for.
    Mark Hachman, PCWorld, 17 Mar. 2020
  • There was a joy in not knowing what came next, in stepping into something undefined.
    Alisa Bittner, Refinery29, 12 Feb. 2026
  • In the warm, undefined space of the painting, veils of blue and purple waft around a golden center.
    BostonGlobe.com, 11 Mar. 2021
  • His role in the offense is still undefined, his shot still not consistently there.
    Dan Woike, Los Angeles Times, 17 Apr. 2024
  • The difference is that the value of money is undefined in law.
    James Grant, WSJ, 15 Dec. 2017
  • At her arraignment, Michelle's face was fleshy and undefined.
    Jesse Barron, Esquire, 23 Aug. 2017
  • It is now slated to release on some undefined day in the spring of 2021.
    Cecilia D'anastasio, Wired, 7 Oct. 2020
  • Wrestling and the media–or, better yet, wrestling with the media–is a landscape that is still undefined.
    Justin Barrasso, SI.com, 13 Dec. 2017
  • Everything was shared, everything was loose and undefined, so things fell through the cracks.
    Larissa MacFarquhar, The New Yorker, 13 Aug. 2019
  • Defense The roles on this defensive line still very much undefined.
    Stephen Holder, Indianapolis Star, 30 Apr. 2018
  • At some point, that undefined future will need to come into focus around the securing of a next job.
    Nate Bennett, Forbes, 7 Mar. 2023
  • As the day went on, the curls loosened and got a little undefined, but the overall effect was so pretty to me.
    Jihan Forbes, Allure, 6 Mar. 2022
  • Those terms are undefined and subjective.
    Tim Regan-Porter, Denver Post, 2 Mar. 2026
  • Interestingly, the marbles game is the most undefined round of the game thus far.
    Quinci Legardye, Vulture, 6 Oct. 2021

Some of these examples are programmatically compiled from various online sources to illustrate current usage of the word 'undefined.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

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