Where does “набрбљати” come from?

набрбљати (Serbo-Croatian) comes from Serbo-Croatian на, from Proto-Slavic na, from Proto-Indo-European h₂en- — on, onto.

Definitions

Ancestry of “набрбљати”, step by step

набрбљати traces back through two separate lines of ancestry.

via Serbo-Croatian на

StepLanguageWordMeaning
1Serbo-Croatianнаto, on, onto; on, at, in; by, for, at
2Proto-Slavicnaon; concerning; onto
3Proto-Indo-Europeanh₂en-on, onto

via Serbo-Croatian бр̀бљати

StepLanguageWordMeaning
1Serbo-Croatianбр̀бљатиto chatter, babble
Every word from Proto-Indo-European h₂en- →Every word from Proto-Slavic na →Every word from Serbo-Croatian на →