6 letters · 9 points in Scrabble
noun a stupid incompetent person
originFirst attested in the 1910s in the US Northeast. Likely from German nit, dialect form of nichts (“nothing”), or Yiddish ניט (nit), dialect form of נישט (nisht, “no”), although some dictionaries give the alternative etymology nit (“louse egg; something very small”) + wit.
Etymology from Wiktionary, CC BY-SA 3.0