To seize or occupy illegally:
To turn or make go to one side
Crash means to violently smash or break or to make a loud and sudden noise.
To involve in a wreck; hence, to cause to suffer ruin; to balk of success, and bring disaster on.
Find another word for derail. In this page you can discover 11 synonyms, antonyms, idiomatic expressions, and related words for derail, like: jump, de-rail, sabotage, hinder, scupper, thwart, go off the rails, deflect, crash, wreck and be wrecked.