Finnish word nerokas comes from Finnish -kas, Finnish nero (Genius.)

Detailed word origin of nerokas

Dictionary entry	Language	Definition
-kas	Finnish (fin)	-y, -ful; a suffix that can be used to turn many, but not all, nouns into adjectives that indicate abundant presence of the thing expressed by the noun. When the suffix is added to the noun, the stem changes in accordance with consonant gradation.
nero	Finnish (fin)	Genius.
nerokas	Finnish (fin)	Brilliant. Ingenious, witty, shrewd.

Words with the same origin as nerokas