expromissorglossary / EXPROMISSOR expromissor (eks-pr[schwa]-mis-[schwa]r), n. Roman law. One who assumes another’s debt and becomes solely liable for it, by a stipulation with the creditor. 词条贡献者 双语律师Virginia,国内知名法学院民商法专业,擅长翻译各类与公司与并购相关的法律文件。