1、He had got to plunge into the filthiest of filth.
2、It was the most wretched misery, dragged from among the filthiest rags.
3、Coal is the filthiest fossil fuel and is cheap only because its dirtiness isn't included in the bill.
4、Don't even begin to imagine what horrors you can possibly catch from what is thought of as the filthiest part of the restroom.
