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Definition of mysterious

mysterious

/mɪˈstɪr.i.əs/
mys · te · ri · ous
Adverb:mysteriously
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mysterious Lexical Profile

mysterious Game Scores & Validity

• adjective

1

Difficult or impossible to understand, explain, or identify.

Example

"Scientists are still trying to determine the source of the mysterious radio signals from deep space."

2

Having an air of secrecy and reserve; deliberately evasive or unwilling to reveal information.

Example

"She was very mysterious about where she had spent the afternoon."

Synonyms
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Antonyms
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• Rhymes for mysterious

• Nearby Words

myrtus
myself
myspace
mysterious
mysteriously
mysteriousness
mystery

Word Origin & Etymology

Borrowed in the early 17th century from French mystérieux, derived from Latin mysterium ('secret rite or doctrine'), which comes from Ancient Greek mystērion ('secret rite'), from myein ('to close the eyes or lips').

Cite this Entry

Wordmom. (2026). Definition of Mysterious. In Wordmom Dictionary. Retrieved Nov 5, 2026, from https://wordmom.com/dictionary/mysterious
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