Where does “Făgărășan” come from?

Făgărășan (Romanian) comes from Romanian Făgăraș, from Romanian -ar, from Latin -ārius, from Proto-Italic *-āzios — Forms relational adjectives to nouns (and rarely numerals).

Ancestry of “Făgărășan”, step by step

StepLanguageWordMeaning
1RomanianFăgăraș
2Romanian-ar-er
3Latin-āriuser
4Proto-Italic*-āziosForms relational adjectives to nouns (and rarely numerals)
Every word from Proto-Italic *-āzios