Where does “dert” come from?

dert (Mòcheno) comes from Middle High German dort, from Old High German doret, from Old High German dār, from Proto-Germanic þar, from Proto-Indo-European tar-, from Proto-Indo-European to-, from Proto-Indo-European só — this; that.

dert (Mòcheno): there

Definitions

there

Ancestry of “dert”, step by step

Step	Language	Word	Meaning
1	Middle High German	dort	—
2	Old High German	doret	there
3	Old High German	dār	there
4	Proto-Germanic	þar	there, in that place
5	Proto-Indo-European	tar-	there
6	Proto-Indo-European	to-	it; that; the, that
7	Proto-Indo-European	só	this; that

Every word from Proto-Indo-European só →Every word from Proto-Indo-European to- →Every word from Proto-Indo-European tar- →