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
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
Carlton Reid Based on 20 years of observations by NASA’s Hubble Space Telescope, new research sheds light on one of the solar system’s most mysterious planets.
—Ryan Waniata, Wired News, 27 May 2025
Denim shifts toward a mysterious direction in Blooming Darkness.
—Angela Velasquez, Sourcing Journal, 27 May 2025
And there's something about that, also keeping a bit mysterious.
—Mark Hughes, Forbes.com, 26 May 2025
Intent on fulfilling his promise, Henry travels to the remote town of Trinity, where an unexpected turn of events traps him in town and leaves him caught between Gabriel Dove, the town's upstanding new sheriff, and a mysterious figure named St Christopher.
—Griff Griffin, MSNBC Newsweek, 26 May 2025
See All Example Sentences for mysterious
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Ryan Waniata, Wired News, 27 May 2025
Denim shifts toward a mysterious direction in Blooming Darkness.
—Angela Velasquez, Sourcing Journal, 27 May 2025
And there's something about that, also keeping a bit mysterious.
—Mark Hughes, Forbes.com, 26 May 2025
Intent on fulfilling his promise, Henry travels to the remote town of Trinity, where an unexpected turn of events traps him in town and leaves him caught between Gabriel Dove, the town's upstanding new sheriff, and a mysterious figure named St Christopher.
—Griff Griffin, MSNBC Newsweek, 26 May 2025
See All Example Sentences for mysterious
Cite this Entry
“Mysterious.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/mysterious. Accessed 2 Jun. 2025.
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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