wilfully

ad. willingly,voluntarily心甘情愿地，自愿地。
△1H.IV.1.3.81:“Who,on my soul,hath wilfullybetrayed/The lives of those that he did lead to fight/Against that great magician,damned Glen-dower，”他，凭我的灵魂起誓，率领军队去跟那个大魔法师、该死的格兰道尔作战的时候，一定是故意出卖了他自己那些士兵的性命。