Where does “pernacchio” come from?

pernacchio (Neapolitan) comes from Neapolitan vernacchio, from Latin vernāculus, from Latin -culus, from Proto-Italic *-kelos — Diminutive suffix.

Ancestry of “pernacchio”, step by step

StepLanguageWordMeaning
1Neapolitanvernacchio
2Latinvernāculusnative, domestic, indigenous, vernacular (originally of slaves)
3Latin-culusAlternative form of -ulus; added to a noun to...
4Proto-Italic*-kelosDiminutive suffix

Words derived from “pernacchio

Every word from Proto-Italic *-kelosEvery word from Latin -culusEvery word from Latin vernāculus