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A person who sees doom coming for humanity as a whole for either rational science-based reasons (AGW, nuclear war, doomsday clock, etc) or irrational reasons (zombie apocalypse, god's punishment, etc). Sometimes used as a slur against schizoid or loner types who have negative worldviews for mental health reasons.
This guy reading The Sixth Extinction is becoming more and more of a doomer as he turns the pages.
by dom-trussardi May 04, 2020
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The demographic cohort following Generation Z. Doomers will come of age at a time when the planet and, thus, society as we know it is irreversibly doomed.

The term is also an assonance (rhyme) of (baby) “boomer,” describing any individual of the very generation that is commonly said to be responsible for the doomed nature of post-millennial existence.
“If the boomers had not destroyed the planet, they would not call us doomers, would they”.
by Reenson August 06, 2019
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Someone who expects the worst possible outcome from a global occurrence, especially the peak in global oil production.

Antonyms are cornucopian, humanist, realist.

Doomers hold a faith based belief that humanity is incapable of resolving human-society created global issues, e.g. by replacing oil with other energy sources.

Refer apocophilia
peakoil.com is packed full of doomers practicing group-think like it was a survival skill.

I used to be a doomer, but then I remembered how to add.
by Jaymax September 16, 2005
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A millennial who grew up in the mid to late 90s around the time the first DOOM game came out. They consider themselves their own separate group from the Millennial generation and they hold a deep resentment towards GenZ kids. They think the early 2000s were the best era of all time and every game made after that era will never live up to "the classics". Can usually be found wearing a dark clothes and a beanie in the back isle of the grocery store buying cigs or a 12 pack of Monster Ultra.
Doomer: *cracks open Monster Ultra* Look at that stupid Zoomer over there doing fortnite dances
by stillsxvc March 20, 2019
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Doomers

Millenial: I'm never going to do anything of value. I have to cry now, I can't handle this I'm just trying to get by
Gen Z kid: I'm never gonna do anything of value! lol

Millennial: Kids should be taught openly about mental health it’s very important! Gen Z:*rides in on Segway* What the hap is fuckening my gays *grabs some tide pods* lol what if I ate these.
Baby Boomer: Peace man!!!! Generation X: Long live Cobain!!!! Generation Y/Millenial: Who needs Peace and Grunge when you have Lady Gaga!!! Generation Z: I wish I could buy an iPad, but I'm in debt!
by You're nothing December 29, 2019
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