Synonyms for mystery

noun

1. The quality of being mysterious

   inscrutability, inscrutableness, unfathomableness, unfathomability, undiscoverability, unanswerableness, unexplainableness, inexplicableness, abstruseness, equivocality, esoterism, occultism, cabalism; see also irregularity 2, magic 1, 2, strangeness.

   Antonyms clarity*, discoverability, scrutability.

2. Something difficult to know

   riddle, conundrum, enigma, secret; see puzzle 2, secret.

3. A trick

   sleight-of-hand, trick of magic, juggle; see trick 1.

4. *A mystery story

   detective story, mystery play, mystery movie; see story. See syn. study at puzzle.