Things are very opaque in Algeria.

Opaque? Not at all. Intuitively obvious to the most casual observer.

The truth is opaque and consequently imperceptible.

When Scrooge awoke, it was so dark, that looking out of bed, he could scarcely distinguish the transparent window from the opaque walls of his chamber.

Some businesses complain of opaque regulations and unequal enforcement of the law.

The day pulls to a close" is a barbarism, possibly entirely opaque if you fail to recognize it as a translation of "The day draws to a close."

You don't know what that small opaque bottle contains.

This is one of the world's most opaque regimes.

The Algerian regime is one of the most opaque regimes on the planet.

Listening to a Portuguese conversation is an unreal experience. A completely opaque string of phonemes, occasionally punctuated by a crystal-clear "Sim, senhor."