1. Slang a person who is annoyingly or obnoxiously cocky, knowing, flippant, etc.; wiseguy
2. Slang annoyingly cocky, knowing, etc. also ˈsmart-ˌassed
Webster’s New World College Dictionary, Fourth Edition, compiled by the
editors of Webster’s New World Dictionaries. Copyright © 2010 by Houghton
Mifflin Harcourt. Published by Houghton Mifflin Harcourt. All rights reserved.