Somebody who thinks the earth is flat.
Normal Human: I heard that Josh was an idiot.
The thing that you are if you don't know what this means.
Non-idiot: Are you an Idiot?
Idiot: What's that?
The word "Idiot" firts result in Google images is Donald Trump because he is the idiot-in-chief.
Idiots are known for stupidity, and acting like a total nut job. Doing stupid acts, such as falling off a deck, or marching for idiotic rights.
All the boys in Mr. Emory's 6th grade class.
"Wow, he is really an idiot."
"Yeah."
MEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEE. I am an idiot LOL
Person 1: HI! How are you?
Me: i am a potato
Person 1: ummmmmmmm ok then?
Me: nscbfguorifjkdfnhbgidondfhiejwoksm
Person 1: God, such an idiot