Definition
If something goes west, it is lost, damaged, or ruined.
（某物） 遺失、損壞或毀壞。
Since we started using this new system, all the workflows have gone west.
自從我們開始使用這個新系統，所有工作流程都亂了套。
I had important files on a USB stick, and the stick failed, so all my data went west.
我的USB隨身碟裡有重要文件，但隨身碟壞了，所有數據都遺失了。
The music festival went west due to the heavy rain.
由於大雨，音樂節泡湯了。