1. in a way that makes no sound; silently

Examples

• The cat moved noiselessly across the wooden floor.
• She opened the door noiselessly so as not to wake the baby.
• The thief crept noiselessly through the dark hallway.
• Snow fell noiselessly outside the window.
• He turned the pages noiselessly while others were studying.
• The owl glided noiselessly through the night sky.