noob (nu?b) nslang another word for newbie Also written: n00b Collins English Dictionary ? Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014noobA derogatory term for a newbie. Often written as ?n00b? in leetspeak.Dictionary of Unfamiliar Words by Diagram Group Copyright © 2008 by Diagram Visual Information Limited