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Synonyms

mysterious

American  
[mi-steer-ee-uhs] / mɪˈstɪər i əs /

adjective

  1. full of, characterized by, or involving mystery.

    a mysterious occurrence.

    Synonyms:
    cryptic, occult, esoteric, secret
  2. implying or suggesting a mystery.

    a mysterious smile.

  3. of obscure nature, meaning, origin, etc.; puzzling; inexplicable.

    a mysterious inscription on the ancient tomb.

    Synonyms:
    impenetrable, enigmatic, incomprehensible, unintelligible, unfathomable

mysterious British  
/ mɪˈstɪərɪəs /

adjective

  1. characterized by or indicative of mystery

  2. puzzling, curious, or enigmatic

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Related Words

Mysterious, inscrutable, mystical, obscure refer to that which is not easily comprehended or explained. That which is mysterious, by being unknown or puzzling, excites curiosity, amazement, or awe: a mysterious disease. Inscrutable applies to that which is impenetrable, so enigmatic that one cannot interpret its significance: an inscrutable smile. That which is mystical has a secret significance, such as that attaching to certain rites or signs: mystical symbols. That which is obscure is discovered or comprehended dimly or with difficulty: obscure motives.

Other Word Forms

  • mysteriously adverb
  • mysteriousness noun
  • quasi-mysterious adjective
  • quasi-mysteriously adverb
  • unmysterious adjective
  • unmysteriously adverb
  • unmysteriousness noun

Etymology

Origin of mysterious

First recorded in 1610–20; mystery 1 + -ous

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Remarkably, her family agrees to their marriage, but when Arturo discovers that the mysterious prisoner held by Puritans is Enrichetta, the widow of the executed King Charles I, he helps her escape.

From The Wall Street Journal

He is cautious about bitcoin because of “the mystery about its founder. . . . One wants to understand what one is investing in. Bitcoin’s foundation is too mysterious.”

From The Wall Street Journal

The instrumental “Tonic” is dark, mysterious, and oddly melodic, evoking an urban landscape in a film sequence charged with danger.

From The Wall Street Journal

There is growing controversy over recent evidence suggesting that a mysterious force known as dark energy might be changing in a way that challenges our current understanding of time and space.

From BBC

A little more than a year after his apology, Berezovsky was found dead in mysterious circumstances in exile in the UK.

From BBC