What does derail mean?

To take a discussion off topic

Derail is when a person takes a discussion thread off topic. It commonly occurs in forums and on message boards.

The term is often used in reference to forum posters who intentionally or unintentionally post something that distracts from the focus of the forum topic. It is closely associated with trolling when done intentionally. It comes from when trains derail off their tracks and crash.


Don't pay attention to Luke. His sole purpose in this forum is to derail discussions to make people mad
Thread derail meme created by StareOfGreed
Thread derail meme created by StareOfGreed

Thread derail GIF animation

Related Slang


Updated April 18, 2016

Derail definition by

This page explains what the slang term "Derail" means. The definition, example, and related terms listed above have been written and compiled by the team.

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