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
The film follows a teenage girl who partners with a mysterious robot and an eccentric grifter to find her brother in a dystopian future.
—Julia Teti, WWD, 13 Mar. 2025
Their work is a search for meaning—an attempt to make sense of mysterious signs.
—Nicolás Medina Mora, The Atlantic, 13 Mar. 2025
Apart is on its way — and has quite the mysterious cover to match.
—Kimberlee Speakman, People.com, 13 Mar. 2025
The episode, from FX Productions will see Olsen playing a sister who begins to hear a mysterious voice, leading her large family (presumably of seven sisters, plus potentially more members) to unravel under the weight of their secrets.
—J. Kim Murphy, Variety, 12 Mar. 2025
See All Example Sentences for mysterious
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Julia Teti, WWD, 13 Mar. 2025
Their work is a search for meaning—an attempt to make sense of mysterious signs.
—Nicolás Medina Mora, The Atlantic, 13 Mar. 2025
Apart is on its way — and has quite the mysterious cover to match.
—Kimberlee Speakman, People.com, 13 Mar. 2025
The episode, from FX Productions will see Olsen playing a sister who begins to hear a mysterious voice, leading her large family (presumably of seven sisters, plus potentially more members) to unravel under the weight of their secrets.
—J. Kim Murphy, Variety, 12 Mar. 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 22 Apr. 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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