Where does “portere” come from?

portere (Middle English) comes from Middle Dutch -ere, 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 “portere”, step by step

StepLanguageWordMeaning
1Middle Dutch-ereForms agent nouns from verbs
2Old Dutch-āri—
3Proto-Germanic-ārijaz-er
4Latin-āriuser
5Proto-Italic*-āziosForms relational adjectives to nouns (and rarely numerals)
Every word from Proto-Italic *-āzios →Every word from Latin -ārius →Every word from Proto-Germanic -ārijaz →