What is another word for go/run off the rails?
Pronunciation: [ɡˌə͡ʊ slˈaʃ ɹˈʌn ˈɒf ðə ɹˈe͡ɪlz] (IPA) 
The phrase "go/run off the rails" refers to a situation where something goes wrong and becomes uncontrollable. There are many synonyms for this phrase that can be used to convey the same meaning. For instance, phrases like "lose control,' "get out of hand," and "spin out of control" can be used to describe this situation. Other synonyms may include "go haywire," "go awry," or "deviate from the norm." These phrases are often interchangeable and can be used to describe a range of scenarios including projects at work, personal relationships, or even everyday situations. Using these alternative phrases can add variety to your vocabulary and help you express yourself more effectively in various situations.
