adverb
: in a soundless manner : without a sound : noiselessly , silently
a lion pacing soundlessly in his cage
shot twice, he crumpled soundlessly to the ground
adverb
: in a soundless manner : without a sound : noiselessly , silently
a lion pacing soundlessly in his cage
shot twice, he crumpled soundlessly to the ground
Webster's New International English Dictionary. Новый международный словарь английского языка Webster. 2012