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