1. Idiot
2. Mental
Incompetent.
3.
Stupid Person
A person who is a complete idiot, is not just doing 1
idiotic act, which would only make them an idiot. To be a complete idiot you must perform a series of stupid actions.
Uncle: Look at that man, he just finished playing 'ding-dong-ditch' on his own house.
Neighbor: Oh, don't worry about
Dale, he is just a complete idiot.
