n.

1. （权利等的）宣告放弃；抛弃[C][U][（+of）]
   He made a renunciation of his chairmanship.

   他声明放弃会长一职。

2. 宣布脱离关系；（对子女等的）拒绝承认[C][U][（+of）]
3. 【律】（对权利等的）放弃声明书[C]
4. 克己[U]
   a life of complete renunciation as a nun

   修女过的那种清心寡欲的苦行生活

n.

1. the action of renouncing.
2. Law  express or tacit abandonment of a right or position.