Inscrutable what a word!
Is it really a word?
Let me check it out.
Okay “The Free Dictionary says “Difficult to understand or interpret; impenetrable” or
1. incapable of being investigated, analyzed, or scrutinized.
2. mysterious; unfathomable: an inscrutable smile.”
Mysterious, dead pan, poker-faced, unfathomable, hidden, blank.
Have a great day! Hope
Word definition help from The Free Dictionary.com