英语“你失约了”怎么说？

根据不同情况，中文“你失约了”有不同意义。

当某人误了一个约会，会面，看医生等，
“你失约了”用：
You missed the appointment.

当某人违背了原先约定的许诺等，
“你失约了”用：
You broke your promise.

You broke the appointment.

You failed to keep an appointment

You broke your promise.