most definitely 

A redundant modification of the word definitely, used by inarticulant athletes (oops, redundantcy alert) during television interviews to describe their agreement with a premise or event that is beyond definite, as if definite meant probably. Most probably used to convince viewers of their almost definite plan to finish the last 3 1/2 years of their college education, after scoring millions of bucks as a stud.

"We most definitely lost the game, since we only scored 10 points, and they hung 38 on us" (because sometimes, you win even though out-scored?).

most definitely by Greg54 November 16, 2005