derail

verb

de·​rail di-ˈrāl How to pronounce derail (audio)
dē-
derailed; derailing; derails

transitive verb

1
: to cause to run off the rails
2
a
: to obstruct the progress of : frustrate
security problems derailed the tour
b
: to upset the stability or composure of
divorce … can seriously derail an employeeJoanne Gordon

intransitive verb

: to leave the rails
derailment noun

Examples of derail in a Sentence

The train derailed in heavy snow. The train was derailed by heavy snow.
Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
However, what separates successful students from those who are derailed by disappointment is their ability to pivot quickly and strategically. Sarah Hernholm, Forbes, 22 Mar. 2025 This will test the Jonathan Majors bodybuilding psychodrama that debuted at Sundance in 2023 but was derailed by abuse accusations against its star after winning the U.S. Dramatic Special Jury Award for Creative Vision and a distribution deal with Searchlight Pictures, which dropped it. Jill Goldsmith, Deadline, 21 Mar. 2025 Which in the 64-team field will have a Cinderella story, and which will become the team that derails your bracket? Rebecca Morin, USA TODAY, 20 Mar. 2025 But injuries derailed that plan, and Jenkins missed most of his rookie season after having back surgery. Sean Hammond, Chicago Tribune, 20 Mar. 2025 See All Example Sentences for derail

Word History

Etymology

French dérailler to throw off the track, from dé- de- + rail, from English

First Known Use

1850, in the meaning defined at transitive sense 1

Time Traveler
The first known use of derail was in 1850

Browse Nearby Words

Cite this Entry

“Derail.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/derail. Accessed 1 Apr. 2025.

Kids Definition

derail

verb
de·​rail di-ˈrā(ə)l How to pronounce derail (audio)
: to cause to run off the rails
a train derailed by heavy snow
derailment noun

More from Merriam-Webster on derail

Last Updated: - Updated example sentences
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