万一
wànyī · HSK 4
if by any chance
🎲 万 = ten thousand + 一 = one; one chance in ten thousand
万 means ten thousand and 一 means one, so 万一 literally points to a one-in-ten-thousand odds — the slim chance worth preparing for. Used like English just in case or if by any chance to flag a remote but possible event.
万 — top 一 + 𠃌 (hook) over 丿
Originally a pictograph of a scorpion, used in oracle bone script. It was borrowed phonetically to mean 'ten thousand' and the original scorpion sense was lost. The traditional form 萬 shows the scorpion more clearly; 万 is a simplified variant long used as a common shorthand.
一 — single horizontal stroke
一 is one of the simplest pictographs in Chinese, depicting a single horizontal line to represent the number one. It has retained essentially the same form since oracle bone script over 3,000 years ago. By extension it also means 'first,' 'whole,' or 'same.'