Where does “uskreven” come from?

uskreven (Norwegian Bokmål) comes from Norwegian Bokmål skreven, from Norwegian Bokmål skrive, from Old Norse skrifa, from Proto-Germanic skrībaną, from Latin scrībō, from Proto-Italic skreiβō, from Proto-Indo-European skreybʰ- — to write.

uskreven (Norwegian Bokmål): unwritten

Definitions

unwritten

Ancestry of “uskreven”, step by step

uskreven traces back through two separate lines of ancestry.

via Norwegian Bokmål skreven

Step	Language	Word	Meaning
1	Norwegian Bokmål	skreven	written
2	Norwegian Bokmål	skrive	to write
3	Old Norse	skrifa	—
4	Proto-Germanic	skrībaną	to write
5	Latin	scrībō	to write
6	Proto-Italic	skreiβō	to carve
7	Proto-Indo-European	skreybʰ-	to write

via Norwegian Bokmål U

Step	Language	Word	Meaning
1	Norwegian Bokmål	U	The uppercase form of u, the twenty-first letter of the Norwegian Bokmål alphabet, written in the Latin script; preceded by t and followed by v
2	Latin	v	Capital form of
3	Etruscan	𐌖	—
4	Ancient Greek	Υ	ypsilon
5	Phoenician	𐤅	waw; {{l\|en\|waw}}
6	Egyptian	𓏲	—

Every word from Proto-Indo-European skreybʰ- →Every word from Proto-Italic skreiβō →Every word from Latin scrībō →