Where does “tvärsäker” come from?

tvärsäker (Swedish) comes from Swedish säker, from Middle Low German seker, from Old Saxon sikur, from Proto-West Germanic sikur, from Latin sēcūrus, from Latin sē-, from Latin sex, from Proto-Italic seks — six.

tvärsäker (Swedish): dead certain, very sure

Definitions

  1. dead certain, very sure

Ancestry of “tvärsäker”, step by step

tvärsäker traces back through two separate lines of ancestry.

via Swedish säker

StepLanguageWordMeaning
1Swedishsäkersafe, secure; sure, certain
2Middle Low Germanseker
3Old Saxonsikur
4Proto-West Germanicsikursecure, safe; sure, certain
5Latinsēcūruscareless, negligent
6Latinsē-apart-; aside-; away
7Latinsexsix; 6
8Proto-Italicsekssix
9Proto-Indo-Europeanswéḱssix

via Swedish tvär

StepLanguageWordMeaning
1Swedishtväracross, perpendicular to the main direction;...
2Old Swedishþvar
3Old Norseþverrathwart, transverse; adverse, contrary; cross,...
4Proto-Germanicþwerhazcross, adverse
5Proto-Germanicþerh-
6Proto-Indo-Europeanterkʷ-to turn, spin
Every word from Proto-Indo-European swéḱsEvery word from Latin sē-Every word from Proto-Italic seks