undervoice

Etymology
.

Noun

 * 1) A low or quiet voice.
 * 2) * 1997,, part 5, chapter 4, in Underworld, part 5, New York: Scribner:
 * Through the battered century of world wars and massive violence by other means, there had always been an undervoice that spoke through the cannon fire and ack-ack and that sometimes grew strong enough to merge with the battle sounds. It was the struggle between the state and secret groups of insurgents, state-born, wild-eyed—the anarchists, terrorists, assassins and revolutionaries who tried to bring about apocalyptic change.
 * 1) * 1997,, part 5, chapter 4, in Underworld, part 5, New York: Scribner:
 * Through the battered century of world wars and massive violence by other means, there had always been an undervoice that spoke through the cannon fire and ack-ack and that sometimes grew strong enough to merge with the battle sounds. It was the struggle between the state and secret groups of insurgents, state-born, wild-eyed—the anarchists, terrorists, assassins and revolutionaries who tried to bring about apocalyptic change.
 * Through the battered century of world wars and massive violence by other means, there had always been an undervoice that spoke through the cannon fire and ack-ack and that sometimes grew strong enough to merge with the battle sounds. It was the struggle between the state and secret groups of insurgents, state-born, wild-eyed—the anarchists, terrorists, assassins and revolutionaries who tried to bring about apocalyptic change.

Verb

 * 1)  To voice too weakly.
 * 2)  To make a quieter or background sound beneath.
 * 1)  To make a quieter or background sound beneath.