Where does “gʷow-sth₂-o-” come from?

gʷow-sth₂-o- (Proto-Indo-European) comes from Proto-Indo-European *steh₂-.

Ancestry of “gʷow-sth₂-o-”, step by step

Step	Language	Word	Meaning
1	Proto-Indo-European	*steh₂-	—

gʷow-sth₂-o- — Etymology, Origin & Word History | Etymology Explorer