nit-twit Share definition Flag A person who constantly tweets, flooding you with inane details about their daily activities. John is a total nit-twit, I've gotten 20 tweets from him this morning, the most interesting of which being that his cat loved the new cat food. nit-twit by golden wench October 14, 2009 0 0 Get merch Get the nit-twit mug. Buy Now — $32.95 See more merch