The air in the room grew thick with tobacco smoke.

That was before the birds grew so thick, else they would have killed us all.

Then the smoke grew too thick for him to see more, and there was nothing to do but wait.

As they walked, the fog again grew thick around them.

There are places where the branches grow thick and high.

The silence grew so thick you could have walked on it.

She looked up at him through an air grown so thick with death you could have sliced it.

Nobody spoke for a while, and the tension grew thick in the air.

His jargon went on, growing too thick for them to understand.

The stars grew thick and bright in the sky above.