丸まる聞ぎこえ

noun

being able to hear everything; overhearing clearly

Used when a conversation or sound is completely audible, often unintentionally or when it was meant to be private. Common in phrases like 丸聞こえだ or 丸聞こえになる.

• 隣となりの部屋へやの話はなしが丸まる聞ぎこえだった。

  I could hear everything from the next room.

• 声こえが大おおきすぎて、会かい議ぎの内ない容ようが廊ろう下かまで丸まる聞ぎこえだよ。

  Your voice is so loud that the meeting details are completely audible out in the hallway.