万が一

Meaning

1. adv
   (if) by some chance; by some possibility; in the unlikely event that; 10000 to 1
2. n
   (unlikely event of) emergency; the worst(-case scenario)

Example sentences

• 万が一彼がこちらへ来たらすぐに知らせます。

  If he should come here, I will let you know at once.

• 万が一気が変わったら、知らせて下さい。

  If you should change your mind, let me know.

• 万が一の場合に備えて貯金するのは賢明だ。

  It is wise to save money for a rainy day.