Where does “päällysvieras” come from?

päällysvieras (Finnish) comes from Finnish vieras, from Proto-Finnic veeras, from Proto-Finnic veeri, from Proto-Finno-Permic wäre.

Ancestry of “päällysvieras”, step by step

päällysvieras traces back through two separate lines of ancestry.

via Finnish vieras

StepLanguageWordMeaning
1Finnishvierasunfamiliar; foreign; guest, visitor
2Proto-Finnicveerasguest, visitor; stranger; strange, foreign,...
3Proto-Finnicveeriside, flank; edge
4Proto-Finno-Permicwäre—

via Finnish päällys

StepLanguageWordMeaning
1Finnishpäällystop, cover, overlay
2Finnishus-ing
Every word from Proto-Finno-Permic wäre →Every word from Proto-Finnic veeri →Every word from Proto-Finnic veeras →