Someone, especially posting on the internet, who uses shocking and nihilistic speech and opinions that they themselves may or may not actually believe to gain attention and come across as a more dangerous and unique person. Most Edgelords are teenagers trying to seem overly cool and/or over-casually apathetic.

"The human race is a blight upon the world, what's wrong with all you people? Honestly I'm just waiting for the next plague to happen," -Johnny Edge

" Oh shut the hell up you whiny edgelord" -Johnny Everyone