Where does “sȃm” come from?

sȃm (Serbo-Croatian) comes from Proto-Slavic samъ, from Proto-Balto-Slavic *sāmas, from Proto-Indo-European somHós, from Proto-Indo-European sem- — together, one.

Ancestry of “sȃm”, step by step

StepLanguageWordMeaning
1Proto-Slavicsamъself, oneself
2Proto-Balto-Slavic*sāmas—
3Proto-Indo-EuropeansomHóssame, alike
4Proto-Indo-Europeansem-together, one

Words derived from “sȃm”

Every word from Proto-Indo-European sem- →Every word from Proto-Indo-European somHós →Every word from Proto-Balto-Slavic *sāmas →