mysterious
adjective
mys·te·ri·ous
mi-ˈstir-ē-əs 
1
a
: 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
Robert Houston
mysteriousness
noun
Synonyms
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.
Recent Examples on the Web
Because the stones making up different aspects of the mysterious structure were moved from many parts of the British Isles, there must have been a reason for it.
—Paul Smaglik, Discover Magazine, 28 Dec. 2024
Of particular interest for Parker is the mysterious heating of the sun's corona and the origins of the solar wind in the solar system.
—Jamie Carter, Forbes, 27 Dec. 2024
George Washington's Mansion Dig Finds Preserved Bottled Fruits From 1700s
By Aristos Georgiou
Science and Health Reporter
2
Ancient Native Americans living in Florida made use of lethally toxic fish for mysterious purposes, a study reports.
—David Faris, Newsweek, 27 Dec. 2024
In this telling, young Thomas Hutter (Nicholas Hoult) is dispatched to a remote castle to finalize the paperwork on a property purchase by the mysterious Count Orlok (Bill Skarsgård).
—Mark Olsen, Los Angeles Times, 27 Dec. 2024
See all Example Sentences for mysterious 
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Paul Smaglik, Discover Magazine, 28 Dec. 2024
Of particular interest for Parker is the mysterious heating of the sun's corona and the origins of the solar wind in the solar system.
—Jamie Carter, Forbes, 27 Dec. 2024
George Washington's Mansion Dig Finds Preserved Bottled Fruits From 1700s
By Aristos Georgiou
Science and Health Reporter
2
Ancient Native Americans living in Florida made use of lethally toxic fish for mysterious purposes, a study reports.
—David Faris, Newsweek, 27 Dec. 2024
In this telling, young Thomas Hutter (Nicholas Hoult) is dispatched to a remote castle to finalize the paperwork on a property purchase by the mysterious Count Orlok (Bill Skarsgård).
—Mark Olsen, Los Angeles Times, 27 Dec. 2024
See all Example Sentences for mysterious
Dictionary Entries Near mysterious
Cite this Entry
“Mysterious.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/mysterious. Accessed 31 Dec. 2024.
Copy CitationKids Definition
mysterious
adjective
mys·te·ri·ous
mis-ˈtir-ē-əs
: containing, suggesting, or presenting a mystery
mysterious noises
also
: difficult or impossible to understand
the mysterious ways of nature
mysteriously
adverb
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