the.com/soundless
The silence so complete it makes you check if your ears still work.
means Making or having no sound at all; utterly quiet.
from Old English sund (sound, as in noise) plus the trusty suffix -less, marking pure absence — literally sound-subtracted, dating back centuries.
True silenceAnechoic chambers reach soundless levels that unnerve most people.
Snow effectFresh snow absorbs sound, making landscapes eerily soundless.
Poetic favoriteBeloved by writers describing deep voids and ghosts.