undetermined

adjective

un·​de·​ter·​mined ˌən-di-ˈtər-mənd How to pronounce undetermined (audio)
-dē-
Synonyms of undeterminednext
: not definitely or authoritatively decided, settled, or identified : not determined
an undetermined boundary
an undetermined species
at an as yet undetermined time
an undetermined number of people

Examples of undetermined in a Sentence

an undetermined form seen only from a distance the fate of the prisoners is still undetermined
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.
Ukraine's air force said Russia launched 149 drones and 11 ballistic missiles into the country from Sunday evening into Monday morning, of which 116 drones and an undetermined number of missiles were shot down or suppressed. David Brennan, ABC News, 9 Feb. 2026 Among the leading causes, at least 28 were the result of an argument, 22 arose from domestic incidents and 14 had an undetermined motive. Lillie Davidson, Fort Worth Star-Telegram, 6 Feb. 2026 The fire marshal testified that the origin of the fire was ultimately undetermined. Erika Stanish, CBS News, 6 Feb. 2026 And an undetermined number of provisional ballots will also be tallied. Dave Goldiner, New York Daily News, 6 Feb. 2026 See All Example Sentences for undetermined

Word History

First Known Use

15th century, in the meaning defined above

Time Traveler
The first known use of undetermined was in the 15th century

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Cite this Entry

“Undetermined.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/undetermined. Accessed 16 Feb. 2026.

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