mysterious

adjective mys·te·ri·ous \ mis-ˈtir-ē-əs \

Definition of mysterious

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

mysteriously

adverb

mysteriousness

noun

Examples of mysterious in a Sentence

  1. the mysterious ways of nature

  2. We heard a mysterious noise outside our tent.

  3. He died under mysterious circumstances.

  4. A mysterious illness has been spreading through the city.

  5. There's something mysterious about that old woman.

  6. Her behavior was very mysterious.

Recent Examples of mysterious from the Web

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'mysterious.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of mysterious

1578



MYSTERIOUS Defined for English Language Learners

mysterious

adjective

Definition of mysterious for English Language Learners

  • : strange, unknown, or difficult to understand


MYSTERIOUS Defined for Kids

mysterious

adjective mys·te·ri·ous \ mi-ˈstir-ē-əs \

Definition of mysterious for Students

:strange, unknown, or hard to understand or explain
  • a mysterious noise
  • a mysterious stranger

mysteriously

adverb
  • She mysteriously disappeared.

mysteriousness

noun


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