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.
Christine Dunn, a lawyer representing the victims in the complaints, said that many of their lives had been derailed by the abuse, leaving them with intense anxiety. Kate Selig, New York Times, 8 Jan. 2025 The 49ers suffered devastating injuries to stars Christian McCaffrey and Brandon Aiyuk and a string of lesser bumps and bruises that derailed the season. Josh Kendall, The Athletic, 7 Jan. 2025 While the drive to innovate can propel a fledgling tech business forward, certain missteps in the early stages can lead to significant setbacks—or even derail a venture entirely. Expert Panel®, Forbes, 7 Jan. 2025 Along with a strong 2020 recruiting class, Sam Bassett spearheaded a program turnaround that was first derailed by injuries across the roster in 2023. Braidon Nourse, The Denver Post, 7 Jan. 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

Dictionary Entries Near derail

Cite this Entry

“Derail.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/derail. Accessed 18 Jan. 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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