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.
An exercise with partially undefined deliverables and an unspecified work plan prepares students for work tasks, such as developing a contribution margin analysis for a product, where a new graduate will need to determine which costs are relevant and how to gather the costs. Steven Wasserman, Forbes, 24 Oct. 2024 Alisson is out for an undefined period after picking up a hamstring injury against Crystal Palace earlier in the month, meaning Kelleher is Liverpool’s number one for the foreseeable future. James Nalton, Forbes, 24 Oct. 2024 The pitch was for the campaign of Kamala Harris, who, until two months ago, was the largely undefined understudy to an unpopular President. Peter Slevin, The New Yorker, 20 Sep. 2024 Resources may be spread too thin, attempting to cater to a broad and undefined audience. Cloé Luv Merraro, Forbes, 17 Sep. 2024 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 Nov. 2024.

More from Merriam-Webster on undefined

Last Updated: - Updated example sentences
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!