expression, noun
muffled voice
Describes a voice that is unclear or indistinct, often because something is covering the mouth or the speaker is in another room.
隣の部屋からくぐもった声が聞こえた。
I heard a muffled voice from the next room.
マスク越しのくぐもった声で話す。
Speak in a muffled voice through a mask.