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 calledderailer a device designed to make rolling stock or locomotives leave the rails to avoid a collision or accident

Derived Forms

• deˈrailment, 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

Earlier this year, The Times reported on allegations that the church attempted to “derail” the case against Masterson by harassing law enforcement officials involved in his criminal trial.

From Los Angeles Times

Her life derailed, she was taken in by mental health services, misdiagnosed as having a mental illness, given medication and therapy.

From BBC

However, advancing that process has been derailed by the ongoing war in Gaza and Arab anger over the suffering of the Palestinians.

From BBC

Speaking to the BBC, director Morgan Neville said he had wanted to address the controversy, but the sequence ultimately derailed the story he was trying to tell.

From BBC

The Azerbaijani president's comments are unlikely to derail talks behind the scenes, which are largely about getting more cash for poorer countries to help implement their climate plans.

From BBC

Related Words

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