Where does “deur-aan-deurverkoper” come from?

deur-aan-deurverkoper (Dutch) comes from Dutch verkoper, from Dutch -er, from Old Dutch -āri, from Proto-Germanic -ārijaz, from Latin -ārius, from Proto-Italic *-āzios — Forms relational adjectives to nouns (and rarely numerals).

Ancestry of “deur-aan-deurverkoper”, step by step

deur-aan-deurverkoper traces back through two separate lines of ancestry.

via Dutch verkoper

StepLanguageWordMeaning
1Dutchverkopersalesman, seller
2Dutch-erForms agent nouns from verbs; Forms nouns for a...
3Old Dutch-āri
4Proto-Germanic-ārijaz-er
5Latin-āriuser
6Proto-Italic*-āziosForms relational adjectives to nouns (and rarely numerals)

via Dutch deur-aan-deur

StepLanguageWordMeaning
1Dutchdeur-aan-deurdoor to door
Every word from Proto-Italic *-āzios