Ego (EE-goh)
Ego sounds like a complicated psychological concept, but its origin could hardly be simpler: it means “I.” For a Roman speaker, ego was simply a way of referring to oneself. Centuries later, philosophers turned that tiny pronoun into a question about the nature of the self. Psychology pushed it even further. English translations of Freud used ego for his German Ich—which also literally meant “I”—and the word became associated with the part of the psyche negotiating between desire, reality, and restraint. Everyday language transformed it once again. Someone with “a big ego” became someone whose I had grown too important. Across all these meanings, the ancient idea remains remarkably visible: ego is fundamentally a word about the self looking back at itself.