From Middle English gnof (“a miser, churl, lout”), of unknown origin. Cognate with Scots gnaff (“any small or stunted object”). Compare Eastern Frisian knufe (“lump”), Eastern Frisian gnuffig (“thick, rough, coarse, ill-mannered”).
"gnoff." YourDictionary, n.d. Web. 17 August 2018. <http://www.yourdictionary.com/gnoff>.
gnoff. (n.d.). Retrieved August 17th, 2018, from http://www.yourdictionary.com/gnoff