Challenging mystery Synonyms

Definitions for Challenging


  • (adjective) requiring considerable physical or mental effort
  • (adjective) requiring much time, effort, or careful attention
  • (adjective) requiring full use of your abilities or resources

Definitions for Mystery


  • (noun) something hard to understand or explain
  • (noun) something that baffles understanding and cannot be explained
  • (noun) a story about a crime (usually murder) presented as a novel or play or movie