Underestimationalism Share definition Flag When one or a one severely doubts or underestimates every object, every person, and or every idea. Yo, This person underestimates everything, including air, I think he has "Underestimationalism". Underestimationalism by Catte Kaiju Paradise March 20, 2026 0 0 Get merch Get the Underestimationalism mug. Buy Now — $32.95 See more merch