Caranoia Share definition Flag The constant fear that your crappy car is going to break down again and leave you stranded. Greg lives in a state of caranoia. He won't drive anywhere because he's afraid his car is going to break down again. Caranoia by SchwagMd May 22, 2011 0 0 Get merch Get the Caranoia mug. Buy Now — $32.95 See more merch