also nit-wit, "stupid person," by 1914, American English slang, probably from nit "nothing," from dialectal German or Yiddish, from Middle Low German (see nix (n.)) + wit (n.). Related: Nitwitted; nitwittery.
nitrogen
nitroglycerine
nitrous
nitty
nitty-gritty
nitwit
niveous
nix
nixie
Nixon
no
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