Level 5 · word 9,907 of 20,000 untie /ʌnˈtaɪ/ American v. 解开, 松开 Definitionv. to undo a knot, or to become undoneExampleCan you help me untie this knot in my shoelace, please?你能帮我解开鞋带上的这个结吗?