N2 — outside your level filter
Modifies the end of the sentence directly and takes no だ/です, so there are no forms to conjugate.
万が一
mangaichijust in case, by any chanceN2adverb
Example sentences2
万が一のことを考えて、保険に入っておいた。
mangaichi no koto o kangaete, hoken ni haitte oita.
Just in case, I went ahead and took out insurance. neutral
万が一忘れ物したら、電話してね。
mangaichi wasuremono shitara, denwa shite ne.
If by any chance you forget something, give me a call. casual