0 in a way that does not show emotions or thoughts and therefore is very difficult to understand or get to know:
Dave looked at him inscrutably.
I have always been bewildered by the old meme about her inscrutably blank expressions.
As these things often do, the missive prompted a piling on of similar tales of inscrutably weird or profoundly rude dating messages.
He loomed at the back of her thoughts, inscrutably dark and romantic.
She smiled inscrutably and turned to look at the coop, clapping her hands in delight.
And the sick girl smiled wanly, inscrutably, the smile of one who knows what he will not say.