scienter actionglossary / SCIENTER ACTION scienter action. A lawsuit in which the plaintiff must prove that the defendant acted knowingly or knew of the danger — e.g., at common law an action for damage caused by a domestic animal. See SCIENTER. 词条贡献者 译者Glen,毕业于世界顶级翻译学院,擅长翻译各种与房地产诉讼相关的法律文件。