Somebody who is intensely aggrovated at the state of Britain, usually British/living in Britain.

This is typically characterised by being against the governmemnt's provoked instability and mismanagement, and seeing the sorry state of culture and country around them. Alongside having a profound disgust at the way things have ended up. We're all affected in this crisis, except our elites. Hold out bruvmen!!!
"Woah, Mark can't pay for his energy anymore, and just given up. He's really become a britdoomer."
by Intrabit February 1, 2023
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