Where does “saitti” come from?

saitti (Finnish) comes from English site, from Middle English site, from Anglo-Norman site, from Latin situs, from Latin -tus, from Proto-Italic -tus, from Proto-Indo-European -tus — Derives action nouns from verb roots.

Ancestry of “saitti”, step by step

StepLanguageWordMeaning
1EnglishsiteSorrow, grief; The place where anything is fixed;...
2Middle Englishsitesorrow, grief
3Anglo-Normansitesite; location
4Latinsituspermitted, allowed, suffered, having been...
5Latin-tusForms the past participle of verbs; Forms...
6Proto-Italic-tus
7Proto-Indo-European-tusDerives action nouns from verb roots
Every word from Proto-Indo-European -tusEvery word from Latin -tusEvery word from Latin situs