Mystery applies to what cannot be fully understood by reason or less strictly to whatever resists or defies explanation. Anything that is kept secret or remains unexplained or unknown. See examples of mystery used in a sentence. Something strange or not known that has not yet been explained or understood Mystery novels are often called “whodunnits” because they turn the reader into a detective trying to figure out the who, what, when, and how of a particular crime. If you talk about the mystery of someone or something, you are talking about how difficult they are to understand or know about, especially when this gives them a rather strange or magical quality.
Mystery noun anything that arouses curiosity or perplexes because it is unexplained, inexplicable, or secret: Definition of mystery noun in oxford advanced learner's dictionary Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more. Any affair, thing, or person that presents features or qualities so obscure as to arouse curiosity or speculation The masked guest is an absolute mystery to everyone. There are six meanings listed in oed's entry for the noun mystery, three of which are labelled obsolete
One that is not fully understood or that baffles or eludes the understanding
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