In place of yes: Q. Are you going to the party at the TEP house tonight? A. Indubidibly
In place of of course: Q. Will you be hanging out with the bretherin this evening? A. Indubidibly
In place of sure: Q. Do you wish to take a ride with me to obtain a delicious meal of Taco Bell or Chipolte? A. Indubidibly
Ok, this is the best word in the english language. Just say it and it gets plastered into the back of your brain and you're hooked on this one word. Saying it over, and over, and over, and over. I love it.