I am kind of tired today.
kind of
idiomSlightly; somewhat; sort of.
Origin
disputed originFrom a reanalysis of kind of in a phrase such as a kind of merry dance from “a kind + of + merry dance” (a type among merry dances) to “a + kind-of merry + dance” (a somewhat merry dance).
The movie was kind of long, but the ending made it worth watching.
The situation is kind of complicated, as the new regulations have created unexpected challenges for the entire department.