as still as a mouse

He sat as still as a mouse, in the futile hope that whoever it was might go away after a single attempt.

A rough likeness made of her did not please at all, because it was white: she took out her red paint, and put some on her own cheeks, as drawn on the paper, and then was quite satisfied, sitting as still as a mouse, while I made another sketch.

He glanced at the next room, but all was quiet there; the little girl had hidden herself, and was as still as a mouse.

“Fool!” he muttered—looking askance at Pavel Pavlovitch, who sat beside him as still as a mouse.

He soon divined my occupation, and kept as still as a mouse until by a sign I released him, when he begged, in the same language, to see what I had drawn.