What does mystery mean?
A mystery is a question, event, person, or circumstance whose explanation or identity cannot readily be understood. The word can refer to a specific unsolved situation, such as a crime or disappearance, to the puzzling quality of a person’s life or reputation, or to a fictional story built around investigation and discovery. In phrases such as “solve a mystery,” it emphasizes the possibility that a coherent explanation exists but has not yet been found. As an adjective, “mystery” commonly characterizes works, guests, prizes, or meals associated with puzzlement or revelation. The term often carries a sense of curiosity and suspense, although it may also imply secrecy, concealment, or mystery as a deliberate effect. Derived forms include “mysterious,” describing something that excites curiosity or is hard to explain, and “mystify,” meaning to make something seem more mysterious or confusing than it really is.
Something that cannot be explained or understood, or a person or thing whose identity, origin, or nature remains unknown.
"Investigators are trying to explain the mystery surrounding the abandoned house."
A specific mystery may be capable of solution; otherwise the expression can simply emphasize uncertainty or incomplete knowledge.
Relating to or involving something unexplained, concealed, or intended to provoke curiosity and suspense.
"The mystery novel traces the clues left behind by a vanished explorer."
This use is especially common in compound nouns such as “mystery novel,” “mystery story,” and “mystery guest.”
Used when referring to multiple unexplained matters, unresolved cases, or works in the mystery genre.
"Several details about the case remain among the enduring mysteries of the investigation."
The word comes from Greek religious traditions in which sacred knowledge was revealed only to initiates, turning secrecy and ritual into the roots of our sense of mystery.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Where does mystery come from?
The English word comes through Latin from Greek mystērion, a term associated with secret rites and knowledge communicated to initiates. The Greek word could denote a secret, revelation, or esoteric doctrine, and the original religious sense later broadened to refer to hidden or inexplicable matters. The same root also underlies “mystic,” “mysticism,” and “mystique,” though their modern meanings vary considerably.
Related word forms
How mystery is actually used
The noun is common in formal and informal English. As an adjective, it commonly occurs in compounds such as “mystery novel,” “mystery story,” and “mystery guest.” “Mystery” can suggest deliberate concealment, but it often describes a matter that is simply unexplained.
Easily confused with mystery
A mystery is an unexplained event or question, whereas mystique is the distinctive aura of fascination or indefinable appeal surrounding a person, place, or thing.
Mystery is the standard spelling; mistery is a rare historical variant rather than a separate modern word.