Where does “perusteleminen” come from?

perusteleminen (Finnish) comes from Finnish perustella, from Finnish perustaa, from Finnish perus, from Finnish perä, from Proto-Finno-Ugric perä, from Proto-Uralic *perä — hindquarters, back part of something.

Ancestry of “perusteleminen”, step by step

StepLanguageWordMeaning
1Finnishperustellato justify, argue, explain, reason, base
2Finnishperustaato establish, found, set up, institute; to base;...
3Finnishperusfoundation; usual, normal, basic
4Finnishperärear, back, tail end; stern, aft; far end or side...
5Proto-Finno-Ugricperä
6Proto-Uralic*perähindquarters, back part of something
Every word from Proto-Uralic *peräEvery word from Proto-Finno-Ugric peräEvery word from Finnish perä