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

Understanding the Context

Learn more. MYSTERY definition: anything that is kept secret or remains unexplained or unknown. See examples of mystery used in a sentence. mystery - Traces back to Greek mustikos, "secret," and musterion, "secret rites"; the lesser-known meaning of mystery as "handicraft; art" is part of the phrase "mystery play."