nostrum
noun [ C ] formal uk/ˈnɒs.trəm/ us/ˈnɑː.strəm/
（未经证实、效果存疑的）灵丹妙药，万应药，妙策
an idea for solving a problem, especially one that is not very good
He refused to embrace any of the fashionable nostrums then current in development economics. 他拒绝接受当时发展经济学中的任何所谓“妙策”。