dérailler
Meanings
Verb
1. to derail, be derailed (all senses) (intransitive)
2. to be off one's rocker (intransitive, informal)
Examples4
La société déraille.
Society is insane.
Le train a déraillé.
The train was derailed.
Il déraille totalement.
He is utterly insane.
Le train a déraillé à cause d'un morceau de fer qui était sur les rails.
The train was derailed by a piece of iron on the track.