Where does “sähkönvaraaja” come from?

sähkönvaraaja (Finnish) comes from Finnish varaaja, from Finnish varata, from Finnish vara, from Proto-Germanic warō, from Proto-Indo-European wēr-, from Proto-Indo-European wer- — to burn; to cover, heed, notice; squirrel.

Ancestry of “sähkönvaraaja”, step by step

sähkönvaraaja traces back through two separate lines of ancestry.

via Finnish varaaja

StepLanguageWordMeaning
1Finnishvaraajaaccumulator machine that accumulates
2Finnishvaratato reserve, book; to put aside, allocate; to put...
3Finnishvarareserve, backup; resources, reserves, funds,...
4Proto-Germanicwarōattention, care
5Proto-Indo-Europeanwēr-true
6Proto-Indo-Europeanwer-to burn; to cover, heed, notice; squirrel

via Finnish sähkö

StepLanguageWordMeaning
1Finnishsähköelectricity
2Finnishsähähtääto sizzle
3Finnishahtaato cram, stuff, fill, pack full; to supercharge;...
4Proto-Finnicaktadakto hang up, especially traps; grain to dry in a...
5Proto-Uralicëkta-to hang up
Every word from Proto-Indo-European wer-Every word from Proto-Indo-European wēr-Every word from Proto-Germanic warō