1 definition by Terry Ryzing
A stupid person. Because the word isn't in great usage right now, referring to a person as a "nitwit" can be considered a more intense way of insulting them.
Tommy: "Cole, you stupid."
Cole: "Eh, whatever, man."
*application of the term*
Tommy: "Cole, you're a complete nitwit."
Cole: "Who do you think you're talking to?"
Cole: "Eh, whatever, man."
*application of the term*
Tommy: "Cole, you're a complete nitwit."
Cole: "Who do you think you're talking to?"
by Terry Ryzing November 1, 2007