万まん一いちに備そなえる

expression, ichidan verb

prepare for the worst; provide against contingencies

A set phrase meaning to make preparations for an unlikely but serious event. Often used in contexts like emergency planning, insurance, or saving for a rainy day.

• 地じ震しんなどの災さい害がいに、万まん一いちに備そなえて非ひ常じょう食しょくを用よう意いしておく。

  I keep emergency food on hand to prepare for the worst, in case of disasters like earthquakes.