Where does “mitäänymmärtämätön” come from?

mitäänymmärtämätön (Finnish) comes from Finnish mikään, from Finnish -kään, from Finnish laji, from Old Swedish slagh, from Middle Low German slach, from Old Saxon slag, from Proto-West Germanic slagi, from Swedish slagg — to hit; strike; to hit, strike, throw; to hit,...

Ancestry of “mitäänymmärtämätön”, step by step

mitäänymmärtämätön traces back through two separate lines of ancestry.

via Finnish mikään

StepLanguageWordMeaning
1Finnishmikäänanything, any; with negative nothing, no
2Finnish-käänneither, not... either also not
3Finnishlajikind, sort; species; sport
4Old Swedishslagh
5Middle Low Germanslach
6Old Saxonslag
7Proto-West Germanicslagiblow, strike
8Swedishslaggslag metallurgical waste material
9Low Germanslagge
10Middle Low Germanslagge
11Middle Low Germanslānto hit, strike
12Old Saxonslāhanto hit
13Proto-West Germanicslahanto hit, to strike; to kill
14Proto-Germanicslahanąto hit, to strike; to kill
15Proto-Indo-Europeanslak-to hit; strike; to hit, strike, throw; to hit,...

via Finnish ymmärtämätön

StepLanguageWordMeaning
1Finnishymmärtämätönsilly, foolish; Negative participle of ymmärtää
2Finnishymmärtääto understand; to identify with, relate to,...
3Proto-Finnicümbärtädäkto understand
4Proto-Finnic-tadakForms verbs from both nominal and verbal stems
5Proto-Uralic-ta-Forms verbs from nouns; Forms causative verbs...
Every word from Proto-Indo-European slak-Every word from Proto-Germanic slahanąEvery word from Proto-West Germanic slahan