What does 滅亡 mean?
滅亡 is a Japanese noun meaning “downfall, collapse, destruction” in English. It is written as 滅亡 in kanji, めつぼう in hiragana, and metsubou in romaji. This word is part of JLPT N1 vocabulary.
Example sentence
仮に核戦争が起こったとすれば、人類は滅亡するだろう。
If a nuclear war were to break out, mankind would perish.