壁かべ越ごし

noun

through a wall; on the other side of a wall

Describes hearing, sensing, or communicating through a wall. Often used adverbially as 壁越しに.

• 壁かべ越ごしに隣となりの部屋へやの話はなし声ごえが聞きこえた。

  I could hear voices from the next room through the wall.

• 壁かべ越ごしに彼かれと話はなした。

  I talked to him through the wall.