A: Americans may spell it “tidbit” because that's how the term was pronounced when it first appeared in English in the 17th century as “tyd bit.” The Oxford English Dictionary suggests that the term may have originated as a combination of the adjective “tid” (playful, frolicsome, lively, etc.)
Where does the saying titbit come from?
Tidbit, or titbit in the U.K., comes from the dialectical tid, "fond or tender."
What is the meaning of tits bits?
Noun. 1. titbit - a small tasty bit of food. choice morsel, tidbit. dainty, goody, kickshaw, treat, delicacy - something considered choice to eat.