Synonym: soundlessly. Similar words: noiseless, uselessly, ceaselessly, remorselessly, selflessly, carelessly, hopelessly, tirelessly. Meaning: ['nɔɪzlɪslɪ] 
adv. without a sound.
adv. without a sound. 
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31. And with this fearful injunction the count disappeared through the door, which noiselessly closed after him.
32. Hunter noiselessly opened the gate and crept quietly along the grass border of the garden path.
33. It was an order the count had just given, for immediately Ali went noiselessly , and returned, bearing a black dress and a three-cornered hat.
34. Brockway watched me out of the corner of his eye, snickering noiselessly.
35. When a key turned in the lock, he stepped swiftly and noiselessly to the side of the door, a fireplace andiron held high overhead.
36. Cathy entered by the casement window of the drawing-room, and glided noiselessly up to where I awaited her.
More similar words: noiseless, uselessly, ceaselessly, remorselessly, selflessly, carelessly, hopelessly, tirelessly, relentlessly, endlessly, aimlessly, helplessly, restlessly, ruthlessly, needlessly, flawlessly, harmlessly, tactlessly, heedlessly, fearlessly, recklessly, listlessly, soundlessly, effortlessly, fruitlessly, mercilessly, uselessness, speechlessly, breathlessly, useless.