Definition of doomer:
(n) :
(neologism, sometimes capitalized) Someone who is apathetic or has a negative prospect towards the world.
(n) :
One who believes that petroleum depletion will inevitably lead to a severe recession or depression, followed by a Malthusian catastrophe.
(n) :
(rare) One who, or that which, dooms or pronounces sentence; judge.
(n) :
(video games, informal) A player of the video game Doom.
(n) :
Alternative letter-case form of doomer. [One who believes that petroleum depletion will inevitably lead to a severe recession or depression, followed by a Malthusian catastrophe.]
(n) :
Alternative letter-case form of Doomer (“player of DOOM”). [(video games, informal) A player of the video game Doom.]