Where does “subericolo” come from?

subericolo (Italian) comes from Italian subero, from Latin sūber, from Old High German sūbar, from Proto-West Germanic sūbrī, from Latin sōbrius, from Latin sē-, from Latin sex, from Proto-Italic seks — six.

Ancestry of “subericolo”, step by step

StepLanguageWordMeaning
1Italiansubero—
2Latinsūbercork oak, cork-tree
3Old High Germansūbarclean
4Proto-West Germanicsūbrīsober; clean
5Latinsōbriussober (not drunk)
6Latinsē-apart-; aside-; away
7Latinsexsix; 6
8Proto-Italicsekssix
9Proto-Indo-Europeanswéḱssix
Every word from Proto-Indo-European swéḱs →Every word from Latin sē- →Every word from Proto-Italic seks →