万まん々まん一いちMeaningsAdverb1. (if) by some very rare chance; in the very unlikely event that ... (more emphatic than 万一)Other spellings万まん万まん一いちUsage share unknownOther readings万ばん々ばん一いつ万ばん万ばん一いつKanji used万ten thousand一onePitch accentまんまんいち