背せ中なか合あわせ

noun

back-to-back; facing opposite directions

Describes a physical arrangement where two people or things are positioned with their backs touching or facing away from each other.

• 二人ふたりは背せ中なか合あわせに座すわって本ほんを読よんでいた。

  The two sat back-to-back reading books.

• この部屋へやは隣となりの部屋へやと背せ中なか合あわせになっている。

  This room is back-to-back with the next room.

noun

two sides of the same coin; inextricably linked

Metaphorical use, often implying that two things are inseparable, especially when one is dangerous or undesirable. Commonly used in phrases like 背中合わせの関係.

• 自じ由ゆうと責せき任にんは背せ中なか合あわせだ。

  Freedom and responsibility are two sides of the same coin.

• 成せい功こうと失しっ敗ぱいは背せ中なか合あわせの関かん係けいにある。

  Success and failure are inextricably linked.

noun

on bad terms; at odds

Describes a strained relationship where two people are not getting along, often with a sense of mutual avoidance or tension. Frequently used with なる or だ.

• あの二人ふたりは最さい近きん背せ中なか合あわせになってしまった。

  Those two have recently fallen out with each other.

• 彼かれとはどうも背せ中なか合あわせで、うまく話はなせない。

  I'm on bad terms with him and can't talk properly.