Where does “iskostuminen” come from?

iskostuminen (Finnish) comes from Finnish iskostua, from Finnish iskostaa, from Finnish iskos, from Finnish iskeä, from Proto-Finnic iskedäk — to hit, to strike; to attack.

Ancestry of “iskostuminen”, step by step

Step	Language	Word	Meaning
1	Finnish	iskostua	to get/be instilled to become part of someone's nature
2	Finnish	iskostaa	to instill to cause a quality to become part of someone's nature
3	Finnish	iskos	flake
4	Finnish	iskeä	to strike, hit; to attack; to crack down
5	Proto-Finnic	iskedäk	to hit, to strike; to attack

Every word from Proto-Finnic iskedäk →Every word from Finnish iskeä →Every word from Finnish iskos →