Noun
the property of making no sound
Source: WordNetBe extremely subtle, even to the point of formlessness. Be extremely mysterious, even to the point of soundlessness. Thereby you can be the director of the opponent's fate. Sun Tzu
She learned the intricacy of loneliness: the horror of color, the roar of soundlessness and the menace of familiar objects lying still. Toni Morrison
Be extremely subtle, even to the point of formlessness. Be extremely mysterious, even to the point of soundlessness. Sun Tzu