Where does “egoismus” come from?

egoismus (New Latin) comes from Latin egō, from Proto-Italic egō, from Proto-Indo-European éǵh₂ — I.

Ancestry of “egoismus”, step by step

StepLanguageWordMeaning
1LatinegōI; first person singular personal pronoun, nominative case
2Proto-ItalicegōI
3Proto-Indo-Europeanéǵh₂I

Words derived from “egoismus”

Every word from Proto-Indo-European éǵh₂ →Every word from Proto-Italic egō →Every word from Latin egō →