Where does “obostran” come from?

obostran (Serbo-Croatian) comes from Serbo-Croatian oba, from Proto-Slavic oba, from Proto-Balto-Slavic aboˀ, from Proto-Indo-European bʰoh₁ — both.

obostran (Serbo-Croatian): mutual, reciprocal

Definitions

  1. mutual, reciprocal

Ancestry of “obostran”, step by step

obostran traces back through two separate lines of ancestry.

via Serbo-Croatian oba

StepLanguageWordMeaning
1Serbo-Croatianobaboth
2Proto-Slavicobaboth
3Proto-Balto-Slavicaboˀboth
4Proto-Indo-Europeanbʰoh₁both

via Serbo-Croatian strána

StepLanguageWordMeaning
1Serbo-Croatianstránaside
2Proto-Slavicstornàside, land
Every word from Proto-Indo-European bʰoh₁ →Every word from Proto-Balto-Slavic aboˀ →Every word from Proto-Slavic oba →