grandfatherglossary / GRANDFATHER grandfather, vb. To cover (a person) with the benefits of a grandfather clause (the statute sets the drinking age at 21 but grandfathers those who are 18 or older on the statute’s effective date). 词条贡献者 双语律师Andrew,欧洲名校国际税法专业,擅长翻译各类与国际税法相关的法律文件。