What is Absitively?
1.
A cross between absolutely and positively. Coined long before The Simpsons, since it was used by Henry Blake and Frank Burns in MASH in the 1970's and in the movie Oliver & Company in 1988.
In the episode "The Trial Of Henry Blake," the court asks Frank, "Do you swear to tell the truth, the whole truth, and nothing but the truth?"
Frank responded by saying "Absitively."