mystery Definition

mystery
noun mysteries

1. An event or phenomenon that cannot be, or has not been, explained.

Thesaurus: enigma, conundrum, riddle, puzzle.
2. The quality of being difficult or impossible to explain or understand, or of being odd or obscure and arousing curiosity.
3. Someone about whom very little is known or understood.
4. A story about a crime that is difficult to solve. Also as adj.

Example: a mystery writer
5a. Christianity.
A truth known only because it is revealed by God;
Form: mysteries (especially)
5b. Christianity.
A sacrament.
Form: mysteries (especially)
6. A religious rite, especially the Eucharist.

Etymology: 14c: from Latin mysterium, from Greek mysterion, from myein to close the eyes.