thickening

The baby would have found herself in a fast-moving and quickly thickening forest of huge legs.

When the hern or bitron flies low, the air is gross, and thickening into showers.

A street car landed him within two blocks of the address on the tag, and Bud walked through thickening fog and dusk to the place.

The glade was thickening with shadows, but the sunlight still marked the top of an elm and made glorious the zenith.

Nearer came the sounds and louder, as they spread towards the fort through thickening shadows and the white dews of night.

Sheet after sheet swept down the mountains like wind-driven clouds of mist thickening into water as they came.