mys·​te·​ri·​ous | \ mi-ˈstir-ē-əs How to pronounce mysterious (audio) \

Definition of mysterious

1a : of, relating to, or constituting mystery the mysterious ways of God
b : exciting wonder, curiosity, or surprise while baffling efforts to comprehend or identify : mystifying heard a mysterious noise a mysterious stranger a mysterious plane crash a mysterious illness
2 : stirred by or attracted to the inexplicable … to help a mysterious wizard … ward off the end of the world with blood sacrifices.— Robert Houston

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Other Words from mysterious

mysteriousness noun

Examples of mysterious in a Sentence

the mysterious ways of nature We heard a mysterious noise outside our tent. He died under mysterious circumstances. A mysterious illness has been spreading through the city. There's something mysterious about that old woman. Her behavior was very mysterious.
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Recent Examples on the Web The Robinsons were already struggling to get support from the local police department, but getting the public to recognize their son's mysterious disappearance has been another serious roadblock in their efforts to find Daniel. Athena Ankrah, The Arizona Republic, 14 Oct. 2021 Shang-Chi is drawn into the web of the mysterious Ten Rings organization. Chris Hachey, BGR, 14 Oct. 2021 The missing woman’s family responded with its own statement calling on Laundrie to answer questions about the mysterious disappearance. al, 15 Sep. 2021 The idea to explore the mysterious disappearance of Sudden Impact first came up when Holmes discovered his pal, The Walking Dead chief content officer Scott M. Gimple, shared his obscure fixation with the group. Jillian Sederholm,, 15 Sep. 2021 Guests may also learn about the Society’s most iconic item of the 1930s--how it was connected to opera singer James Melton and about its mysterious disappearance., 9 Sep. 2021 According to insurance company Jewelers Mutual, mysterious disappearance is the No. 1 reason that its customers file a claim. John Egan, Robb Report, 4 Sep. 2021 This gripping novel by the Australian writer of Big Little Lies and Nine Perfect Strangers follows the mysterious disappearance of Joy, an old woman in Sydney, who vanishes one Valentine’s Day after sending a confusing text to her grown children. Tiana Reid, Vulture, 31 Aug. 2021 The state’s Fish and Game Law Enforcement Division said in a statement that one of its conservation officers, Joe Canfield, took an interest Leeman’s mysterious disappearance. Fox News, 10 Aug. 2021

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'mysterious.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of mysterious

1578, in the meaning defined at sense 1a

History and Etymology for mysterious

mystery entry 1 + -ous, probably after Middle French mysterieux

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Time Traveler for mysterious

Time Traveler

The first known use of mysterious was in 1578

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Statistics for mysterious

Last Updated

17 Oct 2021

Cite this Entry

“Mysterious.” Dictionary, Merriam-Webster, Accessed 18 Oct. 2021.

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More Definitions for mysterious



English Language Learners Definition of mysterious

: strange, unknown, or difficult to understand


mys·​te·​ri·​ous | \ mi-ˈstir-ē-əs How to pronounce mysterious (audio) \

Kids Definition of mysterious

: strange, unknown, or hard to understand or explain a mysterious noise a mysterious stranger

Other Words from mysterious

mysteriously adverb She mysteriously disappeared.

More from Merriam-Webster on mysterious

Nglish: Translation of mysterious for Spanish Speakers

Britannica English: Translation of mysterious for Arabic Speakers


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