Meaning of the word enigma in English

What does enigma mean in English? Explore the meaning, pronunciation, and specific usage of this word with Lingoland.

enigma

US /əˈnɪɡ.mə/
UK /ɪˈnɪɡ.mə/

Noun

a person or thing that is mysterious, puzzling, or difficult to understand

Example:
The disappearance of the ancient civilization remains an enigma to historians.
Her sudden change in behavior was an absolute enigma to everyone.