与承诺相反怎么说英语

如果你想表达 "something that is opposite of a promise," 你可以说 "a breach of promise" 或 "a broken promise." 例如:
"His failure to follow through on his promise was a breach of trust."
"She felt betrayed when he broke his promise to be there for her."
你也可以使用其他表达来描述承诺被违反或被打破, 比如 "a violation of a promise," "a failure to honor a promise," 或 "a promise that was not kept."