もしものこと

expression

emergency; unexpected event; rare possibility

Refers to a hypothetical or unlikely negative event, often used in the context of preparation or insurance. The phrase is a set expression combining もしも (if by any chance) and こと (thing/matter).

• もしものことに備そなえて、保ほ険けんに入はいっておいたほうがいい。

  You should get insurance in case of an emergency.

• もしものことがあったら、この番ばん号ごうに電でん話わしてください。

  If something unexpected happens, please call this number.