The manager abrogated his duty to the employees by failing to pay their salaries on time.

abrogated 是动词 abrogate 的过去式。abrogate 由前缀 ab-（表示"离开、去除"）和词根 rog（源自拉丁语 rogare，意为"要求、询问"）组成，字面意思是"取消要求"，引申为"废除、取消、放弃（责任或权利）"。 在句中表示经理"放弃"了对员工应尽的责任。