( informal )
1.
to start behaving in a strange or unacceptable manner, for example, drinking a lot or taking drugs
2.
to lose control and stop functioning correctly :
The company has gone badly off the rails in recent years.
( informal )
1.
to start behaving in a strange or unacceptable manner, for example, drinking a lot or taking drugs
2.
to lose control and stop functioning correctly :
The company has gone badly off the rails in recent years.
Oxford Advanced Learner's English Dictionary. Оксфордский английский словарь для изучающик язык на продвинутом уровне. 2005