the ill-founded belief among some employers that female workers cost more一些雇主认为女职工成本更高的毫无根据的看法

Suspicion and jealousy, however ill-founded, can poison a marriage.再站不住脚的猜忌和嫉妒都能危及婚姻。

an ill-founded fear of such treatment对这种治疗的无端恐惧

But present criticisms are entirely ill-founded.可是现有的批评毫无根据。