inaudible
🇺🇸
/ɪnˈɔːdəbl/
🇬🇧
/ɪnˈɔːdəbl/
too quiet or soft to be heard
The teacher's voice was so soft that it became inaudible to the students in the back of the room.
선생님의 목소리가 너무 부드러워서 교실 뒤쪽의 학생들이 들을 수 없게 되었습니다.