Where does “Mustasilta” come from?

Mustasilta (Finnish) comes from Finnish siltä, from Finnish -lä, from Finnish -as, from Proto-Finnic -s, from Proto-Finno-Ugric -s.

Ancestry of “Mustasilta”, step by step

Mustasilta traces back through two separate lines of ancestry.

via Finnish siltä

StepLanguageWordMeaning
1FinnishsiltäAblative singular form of se
2Finnish-läFront vowel variant of -la
3Finnish-asForms some adjectives; Forms some nouns
4Proto-Finnic-sForms nouns
5Proto-Finno-Ugric-s

via Finnish musta

StepLanguageWordMeaning
1Finnishmustablack; black horse; Elative singular form of...
2Finnish-ntääFront vowel variant of -ntaa
Every word from Proto-Finno-Ugric -sEvery word from Finnish -läEvery word from Finnish -as