renounce　 英 [rɪ'naʊns] 美 [rɪ'naʊns]

基本释义：

This is a verb which means to give up one's right to something.

v.声明放弃；与...断绝关系

例句：

1.He renounced his claim to the property.
他放弃了对财产的要求。
2.It was painful for him to renounce his son.
宣布与儿子脱离关系对他来说是很痛苦的。