Where does “spiksäker” come from?

spiksäker (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.

spiksäker (Swedish): absolutely sure

Definitions

  1. absolutely sure

Ancestry of “spiksäker”, step by step

spiksäker 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 spik

StepLanguageWordMeaning
1Swedishspiknail; spike-shaped metal fastener; an fail-safe...
2Old Norsespíkr—
3Proto-Germanicspīkaz—
4Proto-Indo-Europeanspēy-to stretch; thrive; succeed
Every word from Proto-Indo-European swéḱs →Every word from Latin sē- →Every word from Proto-Italic seks →