mysterious
Pronunciation:
/mɪˈstɪəɹi.əs//məˈstɪɹi.əs/adjective
Definitions
Of unknown origin.
Example: He received a mysterious phone call this morning.
Synonyms:untraceableHaving unknown qualities.
Example: Our boss is a mysterious man who hardly ever meets with us.
Synonyms:esotericuncertainundefinedDifficult to understand.
Example: Why he left without saying goodbye is quite mysterious.
Deliberately evasive or enigmatic.
Example: Stop being mysterious and just tell me what you want.