Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English

English definition of “mystery”

mystery

noun [C/U]  /ˈmɪs·tə·ri/ us  
something strange or unknown which has not yet been explained or understood: [C] Despite years of study, sleepwalking remains a mystery. [U] The details of the scandal are shrouded in mystery. A mystery is also a book, movie, or play about a crime or other event that is difficult to explain: [C] a murder mystery
mysterious
adjective  /mɪˈstɪər·i·əs/ us  
He tried to convince this mysterious woman to go out with him.
mysteriously
adverb  /mɪˈstɪər·i·əs·li/ us  
The light mysteriously came on, although no one was near the switch.
(Definition of mystery from the Cambridge Academic Content Dictionary © Cambridge University Press)
What is the pronunciation of mystery?
Add Cambridge dictionaries to your browser to your website

Definitions of “mystery” in other dictionaries

Word of the Day

throw

to send something through the air with force, especially by a sudden movement of the arm

Word of the Day

Blog

Read our blog about how the English language behaves.

Learn More

New Words

Find words and meanings that have just started to be used in English, and let us know what you think of them.

Learn More