生せい死し不ふ明めいせいしふめいMeanings1noun, noun which may take the genitive case particle 'no'unknown fate; missing; not known if alive or deadUsed in news reports, official statements, and formal contexts to describe a person whose survival status is unconfirmed. Often appears as 生死不明の or 生死不明となる.地じ震しんで生せい死し不ふ明めいの人ひとが