off the rails

制御不能の、軌道を外れた

物事がうまく進まなくなり、問題や被害が生じる状態。

やさしい英語で： No longer working or developing properly, often causing problems or damage.

• The meeting went off the rails.
• His life went off the rails after he lost his job.
• We need to act before the project goes off the rails.

使い方： go off the rails (The discussion went off the rails after his angry comment.)

類義語： out of control, awry

反対語： on track

よく使う表現： go off the rails, completely off the rails

手に負えなくなって

行動や状況が荒れたり混乱したりして、抑えられなくなった状態。

やさしい英語で： If someone or something becomes impossible to control, their behaviour or situation becomes wild or seriously troubled.

• The party went off the rails.
• She went off the rails and started missing school.
• Their spending has gone completely off the rails.

使い方： go off the rails (His life went off the rails after he lost his job.)

類義語： out of control

反対語： under control

よく使う表現： go off the rails, completely off the rails

軌道を外れて

計画が予定の方向から外れ、望んだように進まなくなった状態。

やさしい英語で： If a plan leaves its intended course, it stops developing in the way people wanted.

• Our plan went off the rails.
• The debate went off the rails after that question.
• How did the project get so far off the rails?

使い方： go off the rails (The discussion went off the rails when we started talking about lunch.)

類義語： off course, off track

反対語： on track

よく使う表現： go off the rails, off the rails again

正気でない、頭がおかしい

冷静に考えたり、まともに判断したりできないように振る舞う様子。

やさしい英語で： Behaving as if unable to think clearly or reasonably.

• He sounds completely off the rails.
• They called her off the rails after hearing her strange claims.
• Do you think I’m off the rails for believing him?

使い方： be off the rails (He thought she was off the rails for believing that story.)

類義語： crazy, mad

反対語： sane

よく使う表現： completely off the rails, go off the rails

脱線して

列車やその車輪が、走るべきレールから外れている状態。

やさしい英語で： A train or its wheels are no longer on the metal tracks they should follow.

• The train came off the rails.
• Two wheels slipped off the rails on the bend.
• Workers lifted the carriage that was off the rails.

使い方： come off the rails (One carriage came off the rails near the station.)

類義語： derailed

よく使う表現： come off the rails, off the rails again