もしもの

something unexpected

→ 若し

phrase Rare #34,750

something unexpected Often used in phrases like もしものこと or もしものとき to refer to an unforeseen or potentially serious situation.

JA: もしものときに備えて、懐中電灯を用意しておこう。

EN: Let’s have a flashlight ready in case something happens.

If something had happened to that person, then no matter how long I waited...

— Sanjuro (1962)

It's just a what-if fantasy anyway, right?

— 君の名は。 (2016)