Where does “egoismus” come from?

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

Ancestry of “egoismus”, step by step

StepLanguageWordMeaning
1LatinegoI; first person singular personal pronoun,...
2Proto-ItalicegōI
3Proto-Indo-Europeanéǵh₂I
Every word from Proto-Indo-European éǵh₂ →Every word from Proto-Italic egō →Every word from Latin ego →
egoismus — Etymology, Origin & Word History | Etymology Explorer