inscrutable
in-SKROO-tuh-buladjMeaning impossible to understand or read; mysterious
Memory hook can’t SCRUTinize it: in-SCRUT-able. Sami scrutinizes the cat’s face with a magnifying glass, but he still can’t tell what she is thinking: her face is inscrutable.
The cat stared at me with an inscrutable look, and I had no idea what it wanted.
In context Most players grin when they draw a good card, but Grandpa Gus’s face stayed inscrutable, so no one at the table could guess whether he was about to win.
Similar mysterious, unreadable, puzzling, enigmatic
Opposite readable, obvious, transparent
From Late Latin inscrutabilis: in- (not) + scrutari (to search, examine).