2
One with very little intelligence. One who has no fucking clue what they are doing.
by MUG March 07, 2004
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4
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?"
by Terry Ryzing October 31, 2007
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6
a person who apparently has no inkling as to what they should be doing.
Look at Susie, she's a fuckin nitwit!
by Cbutler January 24, 2004
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7
A nimrod. Numbskull. Dolt. Intelligence level of a Nit (Louse egg).
"It's a wonder that nitwit can even breathe properly."
by Cooch1000 April 12, 2019
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