smartass 

a person who persistanly uses sarcasm as a means of communication.

"Leanne is so funny, she's just a big smartass"

smartass by Leanne March 19, 2003

smartass 

A person who just has to make everything make sense. Speaking of which, smartass is a oxymoron because an ass is a stupid person so smartass means "smart stupid person".
(not exactly the opposite of dumbass because a dumbass really is an idiot but a smartass isnt neccessarily a genius)

I guess this definition makes me a smartass

smartass by whatserface November 25, 2007

Smartass 

N. A person who indiligently tries to provoke your thoughts, concerns, ideas, and opinions by arguing and becoming outspoken on their own part.

N. A very outspoken person

Adj. A word describing someone under a description of a smartass

Aaron Littlefield is smartass enough to have earned a spot on Urban Dictionary. Congratulations, you smartass!

Smartass by UIK555 February 19, 2009

smartass 

being serious 1% of the time

god Christys a smartass, she's only serious 1% of the time!!

smartass by vmk82 January 10, 2011

Smartass 

That prick who always takes everything literal and uses sarcasm as his only way of creating humor.

Alaa: "Murphy, stop drawing dicks over my math book and piss off!"

Murphy: Ok. *Makes pissing sounds and walks backwards whilst moving his hips side to side inappropriately*

Alaa: Bloody Smartass..

Smartass by AlaaBrah September 26, 2008

Smartass 

Although it can be a bit childish, being a smart also has it benefits.

Quit being a smartass Jimmy

Smartass by RobotChicken123 September 2, 2018

smartass 

An annoying asshole who attempts to use sarcasm every chance that he/she gets.

Smartasses get on my nerves.

smartass by SuperSonicX September 17, 2006