cost of completionglossary / cost of completion Contracts. An element of damages based on the expense that would be incurred by the party not in breach to finish the promised performance. [Cases: Damages 121. C.J.S. Damages § 111.] 词条贡献者 双语律师Wayne,国际知名法学院法律专业,擅长翻译各类与遗产及遗嘱争议相关的法律文件。