Mysterious

/mɪˈstɪəriəs/

Meaning & Definition

adjective
Difficult or impossible to understand, explain, or identify; having an enigmatic or inexplicable quality.
The old mansion has a mysterious aura that draws visitors in.
Not known or not fully understood.
The origins of the ancient artifact remain mysterious to archaeologists.
Appearing to be hidden or concealed.
She received a mysterious letter with no return address.
Evoking curiosity or wonder, often because of a sense of secrecy.
He has a mysterious smile that makes people wonder what he’s thinking.
Characterized by a sense of the supernatural or otherworldly.
The mysterious lights in the sky puzzled the astronomers.

Etymology

From Latin 'mysteriosus', from 'mysterium', meaning 'mystery'.

Common Phrases and Expressions

mysterious ways
refers to the belief that divine or fateful events can be unpredictable and unclear.
mysterious stranger
a person whose identity is unknown or unclear, often evoking intrigue.

Related Words

mystery
Something that is difficult or impossible to understand or explain.
mysterium
A term used in religious contexts referring to a mystery or secret.
mystique
A fascinating aura of mystery, awe, and power surrounding someone or something.

Slang Meanings

Ghosting someone intentionally for a dramatic effect.
He just went completely mysterious on me—no texts, no calls.
Behaving in an unpredictable or secretive manner.
She's acting all mysterious; I wonder what she's hiding.