Where does “unzufried” come from?

unzufried (Hunsrik) comes from Hunsrik zufried, from Hunsrik zu, from Middle High German zuo, from Old High German zuo, from Proto-West Germanic *tō, from Proto-Germanic tō, from Proto-Indo-European de — Emphatic or contrastive particle, and, but;...

unzufried (Hunsrik): discontent, unsatisfied

Definitions

discontent, unsatisfied

Ancestry of “unzufried”, step by step

Step	Language	Word	Meaning
1	Hunsrik	zufried	content, satisfied
2	Hunsrik	zu	closed
3	Middle High German	zuo	to
4	Old High German	zuo	to
5	Proto-West Germanic	*tō	—
6	Proto-Germanic	tō	to
7	Proto-Indo-European	de	Emphatic or contrastive particle, and, but;...

Every word from Proto-Indo-European de →Every word from Proto-Germanic tō →Every word from Proto-West Germanic *tō →