Mystery, problem, enigma, riddle, puzzle mean something which baffles or perplexes. Mystery applies to what cannot be fully understood by reason or less strictly to whatever resists or defies explanation.. See examples of mystery used in a sentence.
Learn more about all the latest suspenseful movies (plus your favorite classics) on hallmark mystery. 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.
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. Jan 11, 2026mystery 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. Jan 26, 2026noun mystery (countable and uncountable, plural mysteries) something secret or unexplainable;
The quality of being difficult to understand or explain the quality of being mysterious
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