Where does “заверение” come from?

заверение (Russian) comes from Russian заве́рить, from Russian ве́рить, from Proto-Slavic věriti, from Proto-Indo-European weh₁ros, from Proto-Indo-European weh₁- — true.

заверение (Russian): assurance; pledge

Definitions

  1. assurance; pledge

Ancestry of “заверение”, step by step

StepLanguageWordMeaning
1Russianзаве́ритьto assure
2Russianве́ритьto believe, to trust
3Proto-Slavicvěritito believe
4Proto-Indo-Europeanweh₁rostrue
5Proto-Indo-Europeanweh₁-true
Every word from Proto-Indo-European weh₁- →Every word from Proto-Indo-European weh₁ros →Every word from Proto-Slavic věriti →