Definition of mystery noun in oxford advanced learner's dictionary. Meaning, pronunciation, picture, example sentences, grammar, usage notes,. Something strange or not known that has not yet been explained or understood:
Barack and Michelle Obama’s First Date Was So Iconic, It Became a Movie
How to use mystery in a sentence. The meaning of mystery is something not understood or beyond understanding : The mystery genre is a genre of fiction that follows a crime (like a murder or a disappearance) from the moment it is committed.