朽 decay, rot, remain in seclusion 6 strokes jōyō, taught in secondary school old JLPT 1 #1891 in newspapers Readings Onキュウ Kunく.ちる In Chinese 朽 Words written with it 老朽 ろうきゅう infirmity (due to old age) 朽ちる くちる to rot N1 不朽 ふきゅう everlasting