The process of repeating multiple conspiracy theories, untruths, misinformation, and outright lies on a specific topic in short succession in order to "grow" a sense of fear and uncertainty in an unwitting target about the specific topic. Often used to promote a larger narrative to guide an unwitting target's opinion in a direction that would benefit the doomgrower.
Jack: "Have you read that article by the Sensationalist Group about the "Top Risks" predictions for 2024 in which they presuppose various mundane and routine aspects of everyday life will create a year of grave concern?"
Jane: "No, I don't read stuff written by doomsayers, and I am certainly not going to go through an entire article that is doing nothing but doomgrowing."
Fogey/fogy /fougi/ sl. (early 18C+, orig. Scot) old-fashioned, stuck-in-the mud.
Person with old fashioned ideas which he is unwilling to change: Come to the disco and stop being such an old fogey!
You think me an old fogeyand an old tory, his thoughtful voice said. I saw three generations since O’Connel’s time. I remember the famine. Do you know that the orange lodges agitated for repeal of the union twenty years before O’Connel did or before the prelates of your communion denounced him as a demagogue? You fenians forget some things. (James Joyce, Ulysses. Penguin Books,1992. p. 38)