Where does “päästötodistus” come from?

päästötodistus (Finnish) comes from Finnish päästö, from Old Swedish fästa, from Old Norse fasta, from Proto-Germanic fastāną, from Proto-Germanic -āną, from Proto-Germanic -ajaną, from Proto-Indo-European -oyéti, from Proto-Indo-European -yéti — he, she.

Ancestry of “päästötodistus”, step by step

päästötodistus traces back through two separate lines of ancestry.

via Finnish päästö

StepLanguageWordMeaning
1Finnishpäästöemission; release
2Old Swedishfästato sign on, to engage
3Old Norsefasta
4Proto-Germanicfastānąto observe, hold firm to; to fast, to abstain...
5Proto-Germanic-ānąCreates factitive verbs from adjectives, later...
6Proto-Germanic-ajaną
7Proto-Indo-European-oyétiCreates factitive verbs from adjectives
8Proto-Indo-European-yétiCreates intransitive, often deponent,...
9Proto-Indo-Europeanyé-
10Chichewaiyehe, she

via Finnish todistus

StepLanguageWordMeaning
1Finnishtodistuscertificate; diploma, report card, certificate;...
2FinnishtodistaaTo prove, demonstrate, substantiate; To witness,...
3Finnishtositruth, reality, real thing; real-life; true
4Proto-Finnictocitruth
Every word from Chichewa iyeEvery word from Proto-Indo-European -yétiEvery word from Proto-Germanic -āną