Where does “räätälöiminen” come from?

räätälöiminen (Finnish) comes from Finnish räätälöidä, from Finnish räätäli, from Swedish skräddare, from Swedish -are, from Old Swedish -are, from Old Norse -ari, from Latin -ārius, from Proto-Italic *-āzios — Forms relational adjectives to nouns (and rarely numerals).

Ancestry of “räätälöiminen”, step by step

StepLanguageWordMeaning
1Finnishräätälöidäto tailor
2Finnishräätälitailor; tailorbird
3Swedishskräddarea tailor
4Swedish-areRegular construction of comparative: ful →...
5Old Swedish-area suffix used to create agent nouns from verbs; such as væriare, from væria
6Old Norse-aria suffix used to create agent nouns from verbs;...
7Latin-āriuser
8Proto-Italic*-āziosForms relational adjectives to nouns (and rarely numerals)
Every word from Proto-Italic *-āziosEvery word from Latin -āriusEvery word from Swedish -are