off the rails

== English == === Etymology === Suggesting the derailment of a locomotive. === Pronunciation === === Prepositional phrase === off the rails (idiomatic) In an abnormal manner, especially in a manner that causes damage or malfunctioning. (idiomatic) Insane. (idiomatic) Off the intended path. (idiomatic) Out of control. Used other than figuratively or idiomatically: see off,‎ rail. ==== Usage notes ==== Most commonly used with the verb to go, but also with forms of to be, to come, etc. ==== Translations ====