Finnish word opettaja comes from Finnish -ja (Forms agent nouns, especially human ones; -er.), Finnish opettaa

Detailed word origin of opettaja

Dictionary entry	Language	Definition
-ja	Finnish (fin)	Forms agent nouns, especially human ones; -er.
opettaa	Finnish (fin)	(transitive) To teach someone (= allative) about something (= elative).. (transitive) To teach someone (= partitive) to do something (= active 3rd infinitive in illative, -maan/-mään).
opettaja	Finnish (fin)	Teacher.

Words with the same origin as opettaja