示しめし合あわせる

ichidan verb, transitive verb

arrange beforehand; prearrange; conspire

Used when people secretly agree on a plan, story, or signal in advance, often with a negative or conspiratorial nuance. The core meaning is mutual prior arrangement.

• 彼かれらは事じ前ぜんに証しょう言げんを示しめし合あわせていた。

  They had prearranged their testimony beforehand.

• 二人ふたりは目め配くばせで示しめし合あわせて、同どう時じに立たち上あがった。

  The two signaled each other with a glance and stood up at the same time.