Narcessertion [nahr-suh-sur-shuhn] [] noun -
  1. a bold and opinionated statement that amounts to self-praise.
  2. any assertion made by a federal narcotics agent. {thanks jbg}
Nevaucus [nuh-vah-kuhs] [] noun, verb -
  1. noun - a meeting of Nevada Democratic party members to select delegates to the state’s presidential candidate nominating convention.
  2. verb - the action of attending a Nevada caucus (e.g., I will Nevaucus for Obama this Saturday). {source}
Nimnamian [nim-nahm-ee-uhn] adjective -
  1. something that is utterly foolish.
  2. a foolish thought voiced, or action perpetrated by, a nim nam. {thanks julie solomon}
Nougatocity [noo-guht-aw-si-tee] [] noun -
  1. a heightened yet fleeting state of accomplishment that makes you realize how unbelievably unmotivated you normally are.
  2. one small part of a larger Snickers marketing campaign. {image source} {thanks michael}