fuckno-ness Share definition Flag When someone is totally disagreeing with something so much that they have to add a ness on the end to give extra emphasis. "dude did you kiss that slutty bitch?" response "fuckno-ness, that thought makes me gag!" fuckno-ness by THENukem June 16, 2011 0 0 Get merch Get the fuckno-ness mug. Buy Now — $32.95 See more merch