Adjective, an antonym (opposite) to the smartest, describing a person who always tries to outsmart everybody they come across, considering everybody stupid and thinking no one notices that their behaviour is outrageous, while everybody keeps silence out of politeness. A synonym to a dickhead, prick, bastard etc.
Keep away from Donald. He is so smart-assed. Thinks himself the smartest and consider everybody yahoos. He will buy you a cup of "covfefe" today , but tomorrow he will make you pay for a dozen of "covfefes".
by Murdoc Kylburne January 16, 2018
Get the smart-assedmug. 
When a bird is so fit that you don’t know how to approach or even act around them. *sees girl*
Me: boys she’s dead smart
Me: boys she’s dead smart
by Dead smart March 22, 2020
Get the Dead smartmug. this man has the biggest dick you will ever see hide yo wife hide yo daugerter cuz he will pull all them bitchs
by dwanyan April 26, 2022
Get the Jay smartmug. by God Left Us May 6, 2019
Get the Smartmug. No you are not
by SpiritMage April 30, 2025
Get the I'm Smartmug. by Nothingherern September 23, 2020
Get the You a smartmug.