Where does “sztabil” come from?

sztabil (Kashubian) comes from German stabil, from Latin stabilis, from Latin stare, from Latin sto, from Proto-Italic staēō, from Proto-Indo-European sth₂éh₁yeti, from Proto-Indo-European *steh₂-.

Ancestry of “sztabil”, step by step

Step	Language	Word	Meaning
1	German	stabil	stable
2	Latin	stabilis	That stands firm; firm, steadfast, steady, sure,...
3	Latin	stare	present active infinitive of stō; stand; to be
4	Latin	sto	I stand; I stay, remain; I am
5	Proto-Italic	staēō	stand
6	Proto-Indo-European	sth₂éh₁yeti	to stand
7	Proto-Indo-European	*steh₂-	—

Every word from Proto-Indo-European *steh₂- →Every word from Proto-Indo-European sth₂éh₁yeti →Every word from Proto-Italic staēō →