Äänekoski

Etymology
🇰🇲. According to Terho Itkonen, the ääne- element comes from a root *eanē- "big", compare, later corrupted by Finnic settlers into the word  (in the local dialect pronounced as eäni) and interpreted as referring to the sound of the rapids. The settlement is named after the rapids.

The toponym has been attested since c. 1455, Ænækoski laxefiskeri.