opaque
oh-PAKEadjMeaning hard to understand; also, not letting light through
Memory hook oh-PAQUE: a box on your head: no seeing through. For the costume party, Dev wears a cardboard box over his head. No light gets through; he can’t see out, and no one can see in. The box is opaque.
The opaque curtains kept the bedroom dark even at noon.
In context The notice was so opaque, full of long words and endless sentences, that Dad had to call a lawyer just to find out what it meant.
Similar unclear, murky, cloudy, impenetrable
Opposite clear, transparent, lucid
From Latin opacus, “shaded, dark.”