Where does “täintappaja” come from?

täintappaja (Ingrian) comes from Finnish tappaja, from Ingrian tappaa, from Proto-Finnic tappadak, from Proto-Uralic tappa- — trample.

Ancestry of “täintappaja”, step by step

täintappaja traces back through two separate lines of ancestry.

via Finnish tappaja

StepLanguageWordMeaning
1Finnishtappajakiller, slayer
2Ingriantappaakill
3Proto-Finnictappadakto kill, to slay
4Proto-Uralictappa-trample

via Ingrian täi

StepLanguageWordMeaning
1Ingriantäilouse
Every word from Proto-Uralic tappa-Every word from Proto-Finnic tappadakEvery word from Ingrian tappaa