Where does “uro” come from?

uro (Norwegian Bokmål) comes from Norwegian Bokmål u-, from Old Norse ú-, from Proto-Germanic un-, from Proto-Indo-European n̥-, from Proto-Indo-European ne — not.

uro (Norwegian Bokmål): restlessness; unrest; unease, uneasiness,...

Definitions

restlessness; unrest; unease, uneasiness,...

Ancestry of “uro”, step by step

Step	Language	Word	Meaning
1	Norwegian Bokmål	u-	un-, im-; an abbreviation of certain words...
2	Old Norse	ú-	not, non-, un-
3	Proto-Germanic	un-	not, un-
4	Proto-Indo-European	n̥-	not, un-
5	Proto-Indo-European	ne	not

Every word from Proto-Indo-European ne →Every word from Proto-Indo-European n̥- →Every word from Proto-Germanic un- →