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derail

1 ENTRIES FOUND:
derail /dɪˈreɪl/ verb
derails; derailed; derailing
derail
/dɪˈreɪl/
verb
derails; derailed; derailing
Britannica Dictionary definition of DERAIL
[no object] of a train : to leave its tracks
[+ object] : to cause (a train) to leave its tracks often used figuratively

— derailment

/dɪˈreɪlmənt/ noun, plural derailments