It's the same in Danish, and I'd imagine Norwegian too. And like Swedish, "Sinneswandel" is missing. The Danish for "Ursprung" is »udspring«, which lit. means

It's the same in Danish, and I'd imagine Norwegian too. And like Swedish, "Sinneswandel" is missing. The Danish for "Ursprung" is »udspring«, which lit. means something more akin to 'out spring', but we do have the »ur-« prefix in Danish, meaning origin/source. So »urskov« would be the 'origin of forest', or jungle, i.e. it is the thing that it is the origin of all that. In the same sense, you could - jokingly - making the word »urvittighed« meaning the 'original joke'. Compound nouns are extremely powerful.