Searching for synonyms for mystery? Here’s some similar words from our thesaurus you can use instead.

• “how it got out is a mystery“
• “it remains one of nature’s secrets“

Synonyms

• enigma something that baffles understanding and cannot be explained; a difficult problem
• secret something that should remain hidden from others (especially information that is not to be passed on); information known only to a special group; something that baffles understanding and cannot be explained; not open or public; conducted with or marked by hidden aims or methods; not openly made known; communicated covertly; not expressed; designed to elude detection; hidden from general view or use; (of information) given in confidence or in secret; indulging only covertly; having an import not apparent to the senses nor obvious to the intelligence; the next to highest level of official classification for documents
• closed book something that baffles understanding and cannot be explained

Synonyms

• mystery story a story about a crime (usually murder) presented as a novel or play or movie
• whodunit a story about a crime (usually murder) presented as a novel or play or movie