off the rails
01
used to say that someone is behaving in a way that is wild, irrational, or unconventional
例
He had always been a top student, but he went off the rails in college and started partying all the time.
02
used to say that something is out of control or unpredictable
例
Ever since their CEO resigned, the company has gone off the rails, with plummeting stock prices and massive layoffs.
03
use to say that a train or vehicle has physically left the tracks or rails it is supposed to follow
例
The train went off the rails due to a broken track, causing a derailment.
04
used to say that something is not following the planned or expected course
例
The politician's campaign was expected to be a smooth ride, but it's been plagued by scandals and is now off the rails.
05
used to say that something is extreme or exciting
例
The new roller coaster at the amusement park is off the rails!



























