how to say 背信弃义 in English?

背信弃义 = throw somebody over the bridge
= break one’s promise
= fail to keep one’s word / promise
= breach of promise
= betray a promise

背信弃义

背信弃义 = throw somebody over the bridge
= break one’s promise
= fail to keep one’s word / promise
= breach of promise
= betray a promise