Something that is difficult or impossible to understand or explain. noun
The cause of the strange noise remains a mystery.
The disappearance of the ancient civilization is one of history's great mysteries.
A genre of fiction that involves a mysterious death or a crime to be solved. noun
She enjoys reading mystery novels before bed.
The movie is a gripping mystery that keeps you guessing until the end.
A religious truth that one can know only by revelation and cannot fully understand. noun
The concept of the Holy Trinity is considered a mystery in Christian theology.
The mysteries of faith are often contemplated by theologians.