inscrutable
hard to understand or interpret
Roots
- -able / -ible: able to be, fit to be, or worthy of
- im- / in- (not): not or without
- scrut / scrutiny: search, examine, or look into
Other words with the scrut / scrutiny root
- scrutiny: careful examination or close attention
Inscrutable joins in- not with scrutiny's search. The answer cannot be searched out easily.
His inscrutable expression gave no clue whether the news was good or bad.
An inscrutable face, motive, or system does not open itself to inspection. You look closely, but the meaning does not come out.