"Who knows what slimy thing might have crawled up from Below?"

The slimy thing in the water is seen more frequently.

Between the shelves were slimy bulbous things, cold to the touch.

It's an empty night for him, the slimy thing.

Dark, slimy things she was certain would love to feast on human flesh.

She didn't want him, but she wanted that slimy thing.

My skin crawled as though slimy things moved there, testing their barbed feet.

Now, finding out what slimy things are in his mind, it makes my skin crawl.

And by human standards, it seemed like a slimy thing to abandon a base at the first sign of trouble.

This creature was like a slimy thing that had lived in darkness forever.