Where does “skalpeeraaminen” come from?

skalpeeraaminen (Finnish) comes from Finnish skalpeerata, from Swedish skalpera, from French scalper, from French -er, from Middle French -er, from Old French -ier — suffix used to form infinitives of first...

Ancestry of “skalpeeraaminen”, step by step

Step	Language	Word	Meaning
1	Finnish	skalpeerata	to scalp
2	Swedish	skalpera	to scalp (remove the scalp)
3	French	scalper	to scalp
4	French	-er	Forms infinitives of first-conjugation verbs
5	Middle French	-er	Forms infinitives of first-conjugation verbs;...
6	Old French	-ier	suffix used to form infinitives of first...

Every word from Old French -ier →Every word from French -er →Every word from Middle French -er →