Grade 5
(mys-te-ri-ous) 4 syllables

Definition

adjective. something strange or difficult to understand.

Example Sentence

There was something mysterious about that cave.

More Example Sentences

She looked at him with a mysterious smile.

Synonyms

enigmatic; puzzling; secretive

Antonyms

clear; obvious; known

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mysterious
Hear It! Say It! Write It!

Rhymes

  • serious
  • sirius

  • delirious
  • imperious
  • mysterious

  • deleterious