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derailment

American  
[dee-reyl-muhnt] / diˈreɪl mənt /

noun

  1. the act or process of derailing.

  2. Psychiatry. loosening of associations.


Etymology

Origin of derailment

1940–45; derail + -ment, or < French déraillement

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

See Examples For:

While no one died in the immediate aftermath of the derailment, residents allege ongoing health problems from the accident.

From The Wall Street Journal Aug. 25, 2026

The body filed a legal claim earlier this month against DB Cargo UK and Touax Rail over the derailment near Llangennech, Carmarthenshire, in August 2020.

From BBC Aug. 24, 2026

In High Court documents, Network Rail claimed that the derailment occurred because the wagon had "not been maintained with reasonable care" and is seeking damages for negligence.

From BBC Aug. 24, 2026

He said the big concern was the issue had been reported previously, but "we still ended up with a derailment".

From BBC Aug. 20, 2026

Chances are his train was late, because in 1984 there was a fire somewhere on the New York system every day and a derailment every other week.

From "The Tipping Point" by Malcolm Gladwell

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