derail

[dee-reyl]

verb (used with object)

1. to cause (a train, streetcar, etc.) to run off the rails of a track.

2. to cause to fail or become deflected from a purpose; reduce or delay the chances for success or development of.

   Being drafted into the army derailed his career for two years.

verb (used without object)

1. (of a train, streetcar, etc.) to run off the rails of a track.

2. to become derailed; go astray.

noun

1. a track device for derailing rolling stock in an emergency.

derail

/ dɪˈreɪl /

verb

1. to go or cause to go off the rails, as a train, tram, etc

noun

1. Also called: derailer. a device designed to make rolling stock or locomotives leave the rails to avoid a collision or accident

Other Word Forms

• derailment noun

Word History and Origins

Origin of derail¹

First recorded in 1840–50; from French dérailler, equivalent to dé- negative prefix + -railler, verbal derivative of rail “bar, beam” (from English ); de- rail ¹

Example Sentences

“There’s the risk that it could derail things a bit,” Evans-Pritchard said.

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I opted for a comprehensive policy in case something derailed our plans before or during the trip.

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A sluggish Kentucky bourbon market is taking its toll on distilleries, derailing a turnaround plan for one spirits maker and driving others to bankruptcy.

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“Nothing can derail a brand elevation journey like too much inventory,” he said.

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The unrest risks derailing French President Emmanuel Macron’s efforts to restore France’s influence as a global power, as well as its ability to fend off growing competition from China.

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Related Words

• block 
• deter 
• filibuster 
• hamper 
• hinder 
• impede 
• interfere 
• stall 
• stonewall 
• thwart