un·​de·​fined | \ ˌən-di-ˈfīnd How to pronounce undefined (audio) \

Definition of undefined

: not defined: such as
a : not clearly or precisely shown, described, or limited undefined rules undefined powers a vague, undefined feeling of dread … the true outlines of Clinton's foreign policy remain undefined.— William Greider
b : not provided with a definition an undefined dictionary entry

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Examples of undefined in a Sentence

Recent Examples on the Web 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, "ASU basketball more than just Remy Martin now (But he's still really good)," 21 Feb. 2020 But the law left that term undefined, and industry, landowners and regulators alike agreed that a pasture, perhaps with a few cows on it, fit the bill. Washington Post, "Kentucky was devastated for decades by mountaintop removal. Now scientists have figured out a way to undo the damage — one tree at a time.," 13 Feb. 2020 To report to the House of Representatives when a very low threshold of information was received that an impeachable offense, left undefined, may have been committed. WSJ, "Notable & Quotable: Ken Starr," 29 Jan. 2020 The majority were racist, four were in support of impeachment or against the President and one was undefined. Devon M. Sayers And Theresa Waldrop, CNN, "Commercial pilot charged after allegedly writing racist graffiti on bathroom wall," 20 Jan. 2020 The absolute size of the universe is unknown, and is constantly expanding, so its mass is similarly undefined. Charlie Wood, Popular Science, "How astronomers weigh the universe (and everything in it)," 26 Dec. 2019 The debate began with the race undefined, four hopefuls effectively tied for the lead. James Pindell, BostonGlobe.com, "Scorecard: Grading the debate performance of the Democratic candidates," 14 Jan. 2020 The portion in Indiana is halfway done, with trail gaps identified and a few sections that are undefined with no set route yet. Kellie Hwang, Indianapolis Star, "Coast-to-coast rail trail will cut through Indiana. Here's what Hoosiers can expect.," 19 Dec. 2019 Anyway, Cheryl declares her mother guilty and hateful and locks her up in the G&G bunker (RIP Dilton) for an undefined amount of time. Jessica Macleish, Teen Vogue, ""Riverdale" Might Have Finally Revealed Who Appears to Have Killed Jughead," 12 Dec. 2019

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'undefined.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of undefined

1611, in the meaning defined above

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Time Traveler for undefined

Time Traveler

The first known use of undefined was in 1611

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Statistics for undefined

Last Updated

26 Feb 2020

Cite this Entry

“Undefined.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/undefined. Accessed 29 Feb. 2020.

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More Definitions for undefined


How to pronounce undefined (audio)

English Language Learners Definition of undefined

: not shown or described clearly

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More from Merriam-Webster on undefined

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Spanish Central: Translation of undefined

Britannica English: Translation of undefined for Arabic Speakers

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