undefined

adjective

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

Examples of undefined in a Sentence

plagued by undefined worries that kept her awake at night
Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Who’s right, and why? Pembroke Pines is mistaken in claiming that Broward County’s regional solid waste authority has a vague and undefined long-range plan. Pamella Pema Reid, Sun Sentinel, 7 Feb. 2025 First, the election of a U.S. president who seems agnostic toward technology but may be agnostic one minute and then doctrinaire another — doctrinaire to a new, undefined, capricious ideology. Jim Cramer, CNBC, 2 Feb. 2025 Trump's announcement appears to have provided enough clarity for these companies to maintain their support, though the long-term legal framework remains undefined. Esat Dedezade, Forbes, 20 Jan. 2025 This mindset defers well-being to an undefined future, perpetuating a cycle of overwork and dissatisfaction. Amy Blankson, Forbes, 22 Jan. 2025 See all Example Sentences for undefined 

Word History

First Known Use

1611, in the meaning defined above

Time Traveler
The first known use of undefined was in 1611

Dictionary Entries Near undefined

Cite this Entry

“Undefined.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/undefined. Accessed 21 Feb. 2025.

Last Updated: - Updated example sentences
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