unconditional heirglossary / unconditional heir Civil law. A person who chooses — expressly or tacitly — to inherit without any reservation or without making an inventory. Cf. beneficiary heir. 词条贡献者 资深译员大智,毕业于美国一流的高级翻译学院,专注翻译各种与复杂诉讼有关的法律文件。