Another word for quietness

The quietness with which he spoke made Jessi feel bad for asking.

A few, like Ruskin, were doubtful about "that increased quietness of style"; one or two already suspected that the "sweetness" was obtained at some sacrifice of force, and that the "purity" involved a concession to Victorian conventionality.

Uncertain how to interpret his quietness, she tried to figure out what to say.

After the troubled times which had lasted from 1214 to 1224 they desired nothing more than peace, quietness and good governance.

But then, in the quietness of the night, he began to hear beyond the door, the muffled but clear sounds of lovemaking.