Where does “зашити” come from?

зашити (Serbo-Croatian) comes from Serbo-Croatian ши̏ти, from Proto-Slavic šiti, from Proto-Balto-Slavic sjūtei, from Proto-Indo-European *syewH- — to sew.

Definitions

Ancestry of “зашити”, step by step

зашити traces back through two separate lines of ancestry.

via Serbo-Croatian ши̏ти

StepLanguageWordMeaning
1Serbo-Croatianши̏тиto sew, stitch
2Proto-Slavicšitito sew
3Proto-Balto-Slavicsjūtei—
4Proto-Indo-European*syewH-to sew

via Serbo-Croatian за

StepLanguageWordMeaning
1Serbo-Croatianзаfor; behind, in back of, at; during
2Proto-Slaviczabehind, after (stationary)
Every word from Proto-Indo-European *syewH- →Every word from Proto-Balto-Slavic sjūtei →Every word from Proto-Slavic šiti →