Adjective
(literally, law) Guilty to the same extent as one is charged; guilty to the court's accusations exactly as they were presented.
My evidence will prove beyond a shadow of a doubt that the defendant is guilty as charged!
(by extension) Truly, indeed, verily responsible for having done something.
My coworkers noticed that I was tired, and assumed that I had stayed up all night watching the game. And yes, I was guilty as charged.