A person who lacks intelligence.Can be at very age.It means the person doesnt have a lot of knowledge in different situations but mostly does actions which normal people consider to be uncommon and not responsible.Also they may find it difficult to obey a certain rule.
"I told her 3 times not to eat others leftovers but she still doesnt understands it,she is so stupid."
"She really got into relationship with my ex...gosh she is stupid!
"She really got into relationship with my ex...gosh she is stupid!
by just me ^^ February 2, 2020
Get the stupidmug. Biniam is very stupid.
by RanvenclawPrincess18 November 22, 2018
Get the Stupidmug. When some is expeditiously, astronomically, stupid as fuck.
by mm883 March 22, 2021
Get the Stupidismmug. 
Why? Ok "stupid".
by Bad??? January 18, 2022
Get the Stupidmug.