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jump the rails

idiom/dʒʌmp ðə reɪlz/

to suddenly behave wildly or lose control

The conversation was fine until he suddenly jumped the rails and started ranting about conspiracy theories.

word origin — From the 1800s railway age — when trains jumped off their tracks, the result was a sudden uncontrolled disaster.

jump the rails, see the writing on the wall, be down in the dumps, take the fall, stick your neck out: meanings and examples

Learn these 5 idioms from Idioms set 96. Each entry includes a definition, example sentence, pronunciation, and synonyms. Use the interactive cards above to practice them.

  1. jump the rails · idiom/dʒʌmp ðə reɪlz/

    to suddenly behave wildly or lose control

    The conversation was fine until he suddenly jumped the rails and started ranting about conspiracy theories.

    Origin: From the 1800s railway age — when trains jumped off their tracks, the result was a sudden uncontrolled disaster.

  2. see the writing on the wall · idiom/si ðə ˈraɪɾɪŋ ɔn ðə wɔl/

    to recognize clear signs that something bad is coming

    When the company lost its biggest client, the employees saw the writing on the wall and started looking for new jobs.

    Origin: From the Bible (Daniel 5) — mysterious writing appeared on Belshazzar's wall, predicting his kingdom's imminent fall.

  3. be down in the dumps · idiom/bi daʊn ɪn ðə dʌmps/

    to feel sad, depressed, or discouraged

    After losing his pet, he’s been down in the dumps all week.

    Origin: From the 1500s — possibly from Middle Dutch 'domp,' meaning a feeling of mental dullness or sadness.

  4. take the fall · idiom/teɪk ðə fɔl/

    to take the blame for something, often unfairly

    Even though the whole team made the mistake, the manager made him take the fall for it.

    Origin: An American 1900s expression — accepting the fall meant taking the public blame for something, often saving others.

  5. stick your neck out · idiom/stɪk jʊr nɛk aʊt/

    to take a big risk by supporting or defending someone

    She really stuck her neck out by defending her coworker against the boss’s unfair criticism.

    Origin: From the 1900s — sticking your neck out makes it the easiest target, so it represents taking a brave personal risk.