Where does “fejnowny” come from?

fejnowny (Polish) comes from Maltese fejn, from German fein, from Middle High German fīn, from Old French fin, from Latin fīnis, from Proto-Indo-European dʰnh₂-.

Ancestry of “fejnowny”, step by step

Step	Language	Word	Meaning
1	Maltese	fejn	where
2	German	fein	fine; fine; very good; as it should be; refined;...
3	Middle High German	fīn	—
4	Old French	fin	fine, delicate
5	Latin	fīnis	end
6	Proto-Indo-European	dʰnh₂-	—

Every word from Proto-Indo-European dʰnh₂- →Every word from Latin fīnis →Every word from Old French fin →