Used to describe something or someone that is both insane and idiotic. Created April 2007 in Decatur, IL at the Decatur Herald & Review Newspaper.
by afiliatx67 June 11, 2007
The slow painful way someone who is following a completely derailed train of logic will support or arrive at the most absurdly stupid conclusions.
Watching her Barbie-doll Brain work it's insidiotic pattern was like rubbernecking at an auto accident.
The insidiotic monologue he delivered made me seek out the sound of fingernails on a chalkboard.
Listening to her insidiotic explanation of how the colors on traffic lights were actually reversed, I realized that some people didn't have to really understand anything as long as they followed the rules.
The insidiotic monologue he delivered made me seek out the sound of fingernails on a chalkboard.
Listening to her insidiotic explanation of how the colors on traffic lights were actually reversed, I realized that some people didn't have to really understand anything as long as they followed the rules.
by Ironheart January 23, 2011
A person who at first appears to be normal but who gradually, over time, reveals himself or herself to be nothing more than an idiot. Derived from a merging of the words "insidious" and "idiot".
"The guy sitting beside me on the plane seemed like a cool guy, but the more he kept talking, I came to realize that he was nothing more than an insidiot"
by fredogonefishin April 2, 2014
A person who knowingly acts in a devious and treacherous way to sabotage another person's well-being while simultaneously putting their own well being at risk.
The insidiot did everything in her power to ruin her ex-husband's business with no regard for the ill-effects it would have on her financial health.
by KMUSE July 2, 2013