In recent months, though, the debate over the program's future has grown increasingly shrill.

But the light seemed unrelenting, and the sounds were growing shrill.

She reached for me; her voice grew shriller yet quieter still.

The second voice suddenly grew shrill, then there was a shot, and then another.

International Feuding over the free trade agreement grew louder and more shrill.

For a moment the scream grew shrill, then it ceased abruptly.

If his tone grew shriller, however, the words reached a dwindling audience.

He was breathing so violently his voice was growing shrill.

The blare of the saw grew even more shrill and the board began to vibrate.

But the Chinese have grown increasingly shrill and threatening.