unexplained

adjective

un·​ex·​plained ˌən-ik-ˈsplānd How to pronounce unexplained (audio)
: not explained or accounted for
an unexplained error
an unexplained delay

Examples of unexplained in a Sentence

Recent Examples on the Web
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Reporters assigned to travel aboard Air Force Two were told to prepare for an early morning departure on Tuesday for Islamabad until an unexplained delay — followed by a detour by Vice President JD Vance to the White House — revealed clues that something was wrong. Los Angeles Times, 23 Apr. 2026 See video … LISTEN Tune in as mounting questions over unexplained deaths and disappearances among top researchers raise security concerns and spark calls for an FBI investigation. FOXNews.com, 22 Apr. 2026 Fears of sickness, of strange lumps and unexplained bleeding. Carly Tagen-Dye, PEOPLE, 22 Apr. 2026 The April 17 Atlantic article alleged drinking has led to multiple unexplained absences by Patel and concern across the government. Alexander Mallin, ABC News, 21 Apr. 2026 See All Example Sentences for unexplained

Word History

First Known Use

1721, in the meaning defined above

Time Traveler
The first known use of unexplained was in 1721

Browse Nearby Words

Cite this Entry

“Unexplained.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/unexplained. Accessed 1 May. 2026.

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