1. derail - Noun
2. derail - Verb
To cause to run off from the rails of a railroad, as a locomotive.
Source: Webster's dictionaryThey want to derail peace because they want to plunge Northern Ireland back into armed conflict. Peter Mandelson
Iraq is the central battleground in the war on terror. The terrorists certainly know what is at stake, which is why they are pulling out all the stops to derail our efforts there. They know that a free and democratic Iraq is a serious blow to their interests. Elizabeth Dole
An aggressor nation or extremist group could gain control of critical switches and derail passenger trains, or trains loaded with lethal chemicals. Leon Panetta
Finger-pointing can derail progress and incite revenge. Newton Lee
You reduce illegal immigration by making it harder to get jobs here, or easier to get jobs south of the border. This idea that we can't pass an immigration law until we hit some imaginary security target is just a way to derail reform. Gail Collins
I put less stock in others' opinions than my own. No one else's opinions could derail me. Judd Nelson