signature loanglossary / signature loan An unsecured loan based solely on the borrower’s promise or signature.• To obtain such a loan, the borrower must usu. be highly creditworthy. 词条贡献者 译员张宏,知名法学院法律翻译专业,专注翻译各种与调查与白领犯罪辩护有关的法律文件。