The man held up a hand, and the woman fell instantly silent.

They are instantly silent, so I know they've been discussing my materials at length.

The audience fell instantly silent and intent, as if they had turned into statues.

As the whale plunged beneath the surface, the day was instantly silent.

Goldmoon was instantly silent and looked down at the ground in shame.

The room was instantly silent as all faces turned in his direction.

The crowd was instantly silent, and I saw tears in more than one eye.

His brothers and sister were instantly silent, staring at him.

The cafe was instantly silent as everyone looked at the lawyer.

A noisy cafe would become instantly silent when a stranger walked in and took a seat.