Where does “-lak” come from?

-lak (Serbo-Croatian) comes from Ottoman Turkish ـلق, from Proto-Turkic *-lik — noun suffix; -ness.

Ancestry of “-lak”, step by step

StepLanguageWordMeaning
1Ottoman Turkishـلق-ness
2Proto-Turkic*-liknoun suffix; -ness
Every word from Proto-Turkic *-likEvery word from Ottoman Turkish ـلق