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. balk suggests the interposing of obstacles or hindrances: legal restrictions ~ed police efforts to control crime. circumvent implies a frustrating by means of a particular stratagem: ~ed the law by finding loopholes. outwit suggests craft and cunning in frustrating or circumventing: the rebels ~ted the army repeatedly.