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. 15 May 2018. <http://www.yourdictionary.com/gnoff>.
gnoff. (n.d.). Retrieved May 15th, 2018, from http://www.yourdictionary.com/gnoff