The reasons for such rules have become murky.

But like most issues, the politics have become murky.

But with no peace to keep, their mission has become increasingly murky.

Brilliant colors, mirrors and brass have become murky.

The process of accountability is becoming murky.

The water was rapidly becoming murky with dirt and blood.

I reached for her but the water was becoming murky now, I couldn't see her clearly anymore.

As the lagoon aged, it became murky, stagnant and undesirable for swimming.

The focus has narrowed so much that all background has become murky.

Overhead the sky was leaden grey, and the daylight had become grim and murky.