1 derail | Definition of derail

derail

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

Definition of derail

transitive verb

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

intransitive verb

: to leave the rails

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Other Words from derail

derailment \ di-​ˈrāl-​mənt How to pronounce derailment (audio) , dē-​ \ 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

An opening loss to the rival Panthers would quickly derail the start of a promising season. Si Wire, SI.com, "Northern Iowa vs. Iowa State Live Stream: How to Watch Online, TV Channel, Game Time," 31 Aug. 2019 But injuries derailed Luton’s campaigns both years, each time causing him to miss large stretches of the season. oregonlive.com, "Oregon State Beavers name Jake Luton as its starting quarterback for the 2019 season," 23 Aug. 2019 Talks derailed several times, and at one point there were two competing proposals before lawmakers. Alexei Koseff, SFChronicle.com, "Gavin Newsom signs California bill tightening rules for police shootings," 19 Aug. 2019 Injuries have derailed what many believed to be a promising career based on the sparks shown on the field. Cameron Teague Robinson, The Courier-Journal, "U of L running backs Dae Williams, Aidan Robbins are finally healthy, ready to contribute," 19 Aug. 2019 Ultimately, the amount of trace chemicals a person might consume from a plastic food or beverage containers left in the heat won’t derail their health. Sarah Gibbens, National Geographic, "Exposed to extreme heat, plastic bottles may ultimately become unsafe," 19 July 2019 Kennedy’s assassination in 1963 could have derailed or delayed success, but Johnson proved to be just as fervent an advocate of the space program. Ledyard King, USA TODAY, "Apollo 11 moon landing celebrated as pioneering milestone, but it was really about winning the space race," 17 July 2019 Measurement derails the Schrödinger equation because of a peculiar phenomenon called quantum back-action. Quanta Magazine, "The Quantum Theory That Peels Away the Mystery of Measurement," 3 July 2019 But regardless, as the indictments against the attorney general turn four years old next month, Wednesday's ruling could derail and will most certainly delay Paxton facing a jury of his peers. Lauren Mcgaughy, Dallas News, "Criminal case against Texas AG Ken Paxton in limbo as prosecutors suffer another setback in pay dispute," 19 June 2019

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'derail.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of derail

1850, in the meaning defined at transitive sense 1

History and Etymology for derail

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

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More Definitions for derail

derail

verb

English Language Learners Definition of derail

of a train : to leave its tracks
: to cause (a train) to leave its tracks

derail

verb
de·​rail | \ di-ˈrāl How to pronounce derail (audio) \
derailed; derailing

Kids Definition of derail

1 : to leave or cause to leave the rails The train derailed.
2 : to make progress or success difficult for Injuries derailed his plan for a championship.

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More from Merriam-Webster on derail

Rhyming Dictionary: Words that rhyme with derail

Thesaurus: All synonyms and antonyms for derail

Spanish Central: Translation of derail

Nglish: Translation of derail for Spanish Speakers

Britannica English: Translation of derail for Arabic Speakers