backpedal
vi. 倒踏脚踏板；（拳击中的）后退；（意见等的）撤回；变卦
例句
The cabinet may backpedal on these commitments.
内阁可能会背弃这些承诺。
《柯林斯英汉双解大词典》
Dude, don't backpedal, you know. Onwards!
哥们你可别变卦你是知道的加油！
They promised to cut taxes, but they're beginning to backpedal now.
他们答应要减税，现在却开始打退堂鼓。
