ふぶん
不文 unwritten illiterate uneducated

ふぶんかつ
不分割 indivisibility

ふぶんけんぽう
不文憲法 unwritten constitution

ふぶんほう
不文法 unwritten law common law

ふぶんぽう
不文法 unwritten law common law

ふぶんめい
不分明 obscure vague 不文明 indistinct obscure

ふぶんりつ
不文律 unwritten law unwritten rule common law