Where does “świadectwo” come from?

świadectwo (Polish) comes from Polish świadczyć, from Old Polish świadczyć, from Old Polish świadek, from Proto-Slavic *sъvědъkъ, from Proto-Slavic *sъvěděti.

świadectwo (Polish): certificate

Definitions

certificate

Ancestry of “świadectwo”, step by step

Step	Language	Word	Meaning
1	Polish	świadczyć	to witness; to be indicative, to be a sign of, to indicate, to prove, to evince, to testify, to betoken, to bear witness to, to speak to
2	Old Polish	świadczyć	to testify
3	Old Polish	świadek	witness
4	Proto-Slavic	*sъvědъkъ	witness
5	Proto-Slavic	*sъvěděti	—

Every word from Proto-Slavic *sъvěděti →Every word from Proto-Slavic *sъvědъkъ →Every word from Old Polish świadek →