vaikeatajuinen (Finnish) comes from Finnish vaikea, from Finnish vaiva, from Proto-Finnic vaiva, from Proto-Germanic waiwô, from Proto-Indo-European wai — oh!; woe!.
vaikeatajuinen (Finnish): abstruse difficult to understand or comprehend
Definitions
abstruse difficult to understand or comprehend
Ancestry of “vaikeatajuinen”, step by step
vaikeatajuinen traces back through two separate lines of ancestry.