mindmap root((受挫)) frustrate implies making vain or ineffectual all efforts, however vigorous or persistent: ~d all attempts at government reform. thwart suggests a frustrating or checking by deliberately crossing or opposing one making headway: the park department is ~ed by public indifference to littering. foil implies a checking or defeating so as to discourage further effort: her parents ~ed my efforts to see her. baffle implies a frustrating by confusing or puzzling: ~d by the maze of rules and regulations. （confuse分不清混淆to fail to distinguish two things,如confuse moral and political issues混淆道德和政治议题） balk suggests the interposing of obstacles or hindrances: legal restrictions ~ed police efforts to control crime. (interpose放置阻碍障碍to put something that delays or obstructs，如rules that interpose barriers between children and creativity这些规则阻碍了孩子的创造力) （hinder阻碍干扰to delay or interfere, 如the rain hindered our climbing下雨阻碍了我们爬山） circumvent implies a frustrating by means of a particular stratagem: ~ed the law by finding loopholes. 漏洞 （stratagem诡计计谋手段,骗人或躲避的伎俩a plan or trick to deceive or evade, 如price discounts may be used as a competitive stratagem to attract customers折扣是吸引顾客的竞争手段。该词多用于贬义，不要和战略策略strategy混淆，战略策略指如何投入力量使用资源） outwit suggests craft and cunning in frustrating or circumventing: the rebels ~ted the army repeatedly.