Where does “tuplautua” come from?

tuplautua (Finnish) comes from Finnish tuplata, from Finnish -tä, from Proto-Finnic -ta, from Proto-Uralic -tä — from.

Ancestry of “tuplautua”, step by step

StepLanguageWordMeaning
1Finnishtuplatato double
2Finnish-täFront vowel variant of -ta
3Proto-Finnic-taPartitive ending
4Proto-Uralic-täfrom
Every word from Proto-Uralic -tä →Every word from Finnish -tä →Every word from Finnish tuplata →