He had been voicelessly calling for Plouff and for the captain.
"Command"
William McFee
From the grass rose birds, startled by their approach, one whirring away voicelessly from a hidden nest, another, a yellow and black-throated lark, singing joyously.
"The Desert Valley"
Jackson Gregory
Her lips trembled-voicelessly they shaped a name.
"The Story of Louie"
Oliver Onions