He died in mysterious circumstances. See examples of mysterious used in a sentence. That which is mysterious, by being unknown or puzzling, excites curiosity or awe:
[200+] Vatican Wallpapers
Inscrutable applies to that which is. Full of, characterized by, or involving mystery. This is reminiscent of the extraordinary relationship which amputees develop with their artificial replacements, revealing a whole inner mysterious.
How to use mysterious in a sentence.
The meaning of mysterious is of, relating to, or constituting mystery. Someone or something that is mysterious is strange and is not known about or understood.