Definition of derail
1 : to cause to run off the rails
2a : to obstruct the progress of : frustrate security problems derailed the tourb : to upset the stability or composure of divorce … can seriously derail an employee — Joanne Gordon
: to leave the rails
derailmentplay \-mənt\ noun
Examples of derail in a Sentence
The train derailed in heavy snow.
The train was derailed by heavy snow.
Recent Examples of derail from the Web
Even after serious leg injuries derailed each of his first two seasons, White's drive hasn't diminished.
Rather than be frustrated over what happened, Patrick has taken a philosophical approach to the setback that partially derailed his third season with Brandon of the Western Hockey League.
Exxon sued to block their subpoenas for millions of pages of documents, while Republicans in Washington have sought to derail the investigations from Capitol Hill.
Neither the political threats nor ongoing banking and tax difficulties will ultimately derail the industry, Viridian and New Frontier predict.
His offensive performance has lagged after an injury derailed his spring preparation near the end of camp.
As teams scramble to get a foothold of their positions in their respective divisions, injuries have already derailed some teams potential at a postseason berth.
Louisiana's state senators may derail plans by Gov. John Bel Edwards' administration to eliminate a Medicaid program that provides behavioral health services to thousands of children.
Scientists said the loss of federal funding would derail the early warning system, which officials hope would one day send public earthquake alerts to smartphones seconds or even minutes before a temblor.
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.
Origin and Etymology of derail
French dérailler to throw off the track, from dé- de- + rail, from English
First Known Use: 1850See Words from the same year
DERAIL Defined for English Language Learners
Definition of derail for English Language Learners
of a train : to leave its tracks
: to cause (a train) to leave its tracks
DERAIL Defined for Kids
Definition of derail for Students
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.
Seen and Heard
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