What does 万一 mean?
万一 is a Japanese noun meaning “in the unlikely event” or “if by any chance” in English. It can also be translated as “emergency (the worst case)” depending on context. It is written as 万一 in kanji, まんいち in hiragana, and man'ichi in romaji. This word is part of JLPT N3 vocabulary.
Example sentences
万一雨が降ったら、試合は中止です。
If by any chance it rains, the match will be cancelled.
万一の時のために、水を買っておいた。
I bought some water just in case.