Where does “сигурно” come from?

сигурно (Bulgarian) comes from Bulgarian сигурен, from Romanian sigur, from Greek σίγουρος, from Venetian seguro, from Latin sēcūrus, from Latin sē-, from Latin sex, from Proto-Italic seks — six.

сигурно (Bulgarian): surely, certainly

Definitions

  1. surely, certainly

Ancestry of “сигурно”, step by step

StepLanguageWordMeaning
1Bulgarianсигуренsure, certain, positive; reliable, trustworthy,...
2Romaniansigursure, confident, certain; safe, secure
3Greekσίγουροςsecure, certain
4Venetiansegurosafe, secure; certain
5Latinsēcūruscareless, negligent
6Latinsē-apart-; aside-; away
7Latinsexsix; 6
8Proto-Italicsekssix
9Proto-Indo-Europeanswéḱssix
Every word from Proto-Indo-European swéḱsEvery word from Latin sē-Every word from Proto-Italic seks