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.

Mystery definition: anything that is kept secret or remains unexplained or unknown.. See examples of MYSTERY used in a sentence.

MYSTERY definition: 1. something strange or not known that has not yet been explained or understood: 2. a book, film…. Learn more.

Mystery fiction can be detective stories in which the emphasis is on the puzzle or suspense element and its logical solution such as a whodunit. Mystery fiction can be contrasted with hardboiled detective …

Nov 1, 2025 · 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.

Definition of mystery noun in Oxford Advanced Learner's Dictionary. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more.

mystery noun Anything that arouses curiosity or perplexes because it is unexplained, inexplicable, or secret: