◎ 违约 wéiyuē
[default;break a contract;violate a treaty;break off an engagement;break one's promise] 不遵守条约、契约的规定
违约行为要受处罚
违背条约或契约的规定。《史记．卷七．项羽本纪．索隐述赞》：「违约王汉，背关怀楚。」近背信,背约反践约,守约