Where does “uuvutussota” come from?

uuvutussota (Finnish) comes from Finnish uuvutus, from Finnish uuvuttaa, from Finnish uupua, from Finnish uu, from Latin U, from Latin V, from Etruscan ? — u.

uuvutussota (Finnish): war of attrition prolonged exhausting war

Definitions

war of attrition prolonged exhausting war

Ancestry of “uuvutussota”, step by step

uuvutussota traces back through two separate lines of ancestry.

via Finnish uuvutus

Step	Language	Word	Meaning
1	Finnish	uuvutus	exhausting causing to get exhausted
2	Finnish	uuvuttaa	to exhaust
3	Finnish	uupua	to get tired, get exhausted, get fatigued; to be...
4	Finnish	uu	The name of the Latin-script letter U; hole, nest
5	Latin	U	—
6	Latin	V	ve
7	Etruscan	?	u

via Finnish sota

Step	Language	Word	Meaning
1	Finnish	sota	war; warfare; military, war-
2	Proto-Finnic	sota	war, conflict
3	Proto-Uralic	śoďa	war

Every word from Etruscan ? →Every word from Latin V →Every word from Latin U →