DictionaryAI

mystery

noun
MIS-tuh-ree/ˈmɪs.t(ə.)ɹi/

Pluralmysteries

9 meanings of mystery

Practice

  1. 1
    nouncountable
    Someone or something that is secret, unknown, or impossible to explain or understand.

    The sudden disappearance of the entire crew is one of seafaring's enduring mysteries.

    Exactly why the engine failed is still a mystery to the investigators.

    UsageOften a mystery to someone, or it is a mystery how something happened; also an air of mystery.

    Similarpuzzle, enigma, riddle, conundrum

  2. 2
    crime storynouncountable
    A story, book, film, or play, often about crime or murder, with a surprise ending that explains the strange events that came before.

    The author is best known for her mysteries set in small coastal towns.

    He enjoys a good mystery in which every small clue eventually matters.

    UsageOften a murder mystery; mysteries in the plural names the genre.

    Similarwhodunit

  3. 3
    religious truthnouncountable
    A religious truth that human reason alone cannot grasp, understood only with divine aid.

    Theologians describe the incarnation as a mystery accessible only through faith.

    For believers, certain divine mysteries lie beyond the reach of pure logic.

    Note

    Here the thing is unknown by nature, not for lack of evidence. A puzzle in the everyday sense may yet be solved, but a mystery of faith cannot be reasoned out. Jonathan Swift's A Sermon on the Trinity (first printed 1744) shows the usual construction, "this great mystery of the Trinity." Swift adds that even revealed mysteries would stay beyond understanding without further divine help.

    Checked 31 Oct 2026 · 5 facts

Practice

Can you tell the meanings of mystery apart? Answer 3 quick questions from this page, or write your own sentence and AI will check it.

Origin

Ancient Greek múō ("I shut") lies at the root of mústēs ("initiated one"), which gave mustḗrion, meaning "a mystery, a secret, a secret rite." Latin borrowed this as mysterium, and it reached English through Anglo-Norman misterie and Middle English. The word replaced the native Old English ġerȳne.