adjective

• 1Difficult or impossible to understand, explain, or identify.

  ‘his colleague had vanished in mysterious circumstances’

  More example sentences

  • ‘a mysterious benefactor provided the money’

  Synonyms

  puzzling, strange, peculiar, curious, funny, queer, odd, weird, bizarre, mystifying, inexplicable, baffling, perplexing, bewildering, confusing, uncanny, dark, impenetrable, incomprehensible, unexplainable, unfathomable, Delphic, sibylline, unaccountable, insoluble, obscure

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  1. 1.1(of a location) having an atmosphere of strangeness or secrecy.
     More example sentences

     • ‘a dark, mysterious, windowless building’
  2. 1.2(of a person) deliberately enigmatic.
     More example sentences

     • ‘she was mysterious about herself but said plenty about her husband’
     Synonyms

     enigmatic, inscrutable, secretive, sphinxlike, cloak-and-dagger, reticent, non-committal, discreet, evasive, furtive, surreptitious, covert

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