Uff da (sometimes also spelled huffda, uff-da, uffda, uff-dah, oofda, ufda, ufdah, oofta, uf daa, or ufta) is an expression of Norwegian origin adopted by Scandinavian-Americans in the 19th century. It is an exclamation that is relatively common in parts of the Pacific Northwest and Upper Midwestern states of the United States.