成文憲法 せいぶんけんぽう Meanings Noun codified constitution; written constitution See also: 不文憲法 (ふぶんけんぽう). Kanji 成 become. Read as セイ. 文 text. Read as ブン. 憲 constitution. Read as ケン. 法 law. Read as ホウ. Jinuma: Japanese Dictionary · Word lists