renounce

1. V-T If you renounce a belief or a way of behaving, you decide and declare publicly that you no longer have that belief or will no longer behave in that way. 宣佈放棄 (信仰、行爲方式)

After a period of imprisonment she renounced terrorism. 被監(jiān)禁了一段時間後她宣佈放棄恐怖主義。