something that is difficult to understand or explain
The path on the map was a complete mystery to me.
The detective novel was filled with suspense, keeping readers guessing until the final mystery was solved.
Archaeologists unearthed an ancient artifact, sparking a mystery about its origin and purpose.
The mystery surrounding the haunted house attracted thrill-seekers and paranormal investigators.
Life's unpredictability adds an element of mystery, making each day an adventure.
