Where does “mustamaalaaminen” come from?

mustamaalaaminen (Finnish) comes from Finnish mustamaalata, from Finnish maalata, from Finnish maali, from Old Swedish māl, from Old Swedish māla, from Old Norse mála, from Middle Low German mālen, from Old Saxon *mālōn — to strengthen; to bind; to change, exchange.

Ancestry of “mustamaalaaminen”, step by step

StepLanguageWordMeaning
1Finnishmustamaalatato denigrate, defame, discredit to criticise so as to besmirch
2Finnishmaalatato paint; to select, highlight; to score
3Finnishmaalipaint; target; goal
4Old Swedishmālmeasure, amount; sign
5Old Swedishmālato paint
6Old Norsemálato grind
7Middle Low Germanmālento draw, paint; to paint
8Old Saxon*mālōn
9Proto-West Germanic*mālēnto paint
10Proto-Albanianmelanablack
11Proto-Indo-Europeanmelh₂-n-dull black
12Proto-Indo-Europeanmelh₂-to grind, to crush
13Proto-Indo-Europeanmel-soft; tender; weak; to deceive; to rub
14Proto-Indo-Europeanmey-to strengthen; to bind; to change, exchange
Every word from Proto-Indo-European mey-