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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Officials said the unidentified man had previous medical conditions, and his death was reported as unexplained. Elissa Jorgensen, Dallas Morning News, 16 Mar. 2026 The bewildering and unexplained switch over Halligan began when the Bar replied to a complaint against her filed by the nonprofit organization Campaign for Accountability. Orlando Sentinel, The Orlando Sentinel, 13 Mar. 2026 What initially appeared as isolated cases of unexplained lung scarring in young men resolved into a recognizable occupational epidemic once work histories were examined. Dr. Céline Gounder, CBS News, 12 Mar. 2026 It was joined by a slew of unexplained health problems. Jamie Ducharme, USA Today, 12 Mar. 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

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Cite this Entry

“Unexplained.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/unexplained. Accessed 17 Mar. 2026.

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