Where does “tasa-astunta” come from?

tasa-astunta (Finnish) comes from Finnish tasa, from Proto-Finnic tasa, from Proto-Uralic taśa — even.

Ancestry of “tasa-astunta”, step by step

tasa-astunta traces back through two separate lines of ancestry.

via Finnish tasa

StepLanguageWordMeaning
1Finnishtasaof equal height; of the same level
2Proto-Finnictasaeven
3Proto-Uralictaśaeven

via Finnish astunta

StepLanguageWordMeaning
1Finnishastuntagait, tread manner of stepping
2Finnish-ntäFront vowel variant of -nta; API
3Proto-Finnic-ntaForms action nouns from verbs
Every word from Proto-Uralic taśa →Every word from Proto-Finnic tasa →Every word from Finnish tasa →