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
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Newsweek has contacted PomegranateDry4848 comment via Reddit.
—Michael Gfoeller and David H. Rundell, Newsweek, 15 Jan. 2025
The mysterious news promised by the Grammy winner was initially set to go live on Tuesday (Jan. 14).
—Demicia Inman, VIBE.com, 15 Jan. 2025
Severance stars Scott as Mark, a worker drone at the mysterious Lumon corporation who has undergone a surgical procedure to separate his work memories from his personal memories — a separation that became more hazy as Season 1 unfolded.
—Dave Nemetz, TVLine, 14 Jan. 2025
Meanwhile, in Quebec, Tony discovers his mother’s relationship with a mysterious sailor who may hold the key to finding the father he’s never met.
—Melanie Goodfellow, Deadline, 14 Jan. 2025
See all Example Sentences for mysterious 
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Michael Gfoeller and David H. Rundell, Newsweek, 15 Jan. 2025
The mysterious news promised by the Grammy winner was initially set to go live on Tuesday (Jan. 14).
—Demicia Inman, VIBE.com, 15 Jan. 2025
Severance stars Scott as Mark, a worker drone at the mysterious Lumon corporation who has undergone a surgical procedure to separate his work memories from his personal memories — a separation that became more hazy as Season 1 unfolded.
—Dave Nemetz, TVLine, 14 Jan. 2025
Meanwhile, in Quebec, Tony discovers his mother’s relationship with a mysterious sailor who may hold the key to finding the father he’s never met.
—Melanie Goodfellow, Deadline, 14 Jan. 2025
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 19 Jan. 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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