Ego: Satan's Gateway Led By The Spirit or Ego First, we need to identify what "Ego" really is. Ego is a person's sense of self-esteem or self-importance, e.g. "He needed a boost to his ego". Some synonyms of the word ego include self-esteem, self-importance, self-worth, self-respect, self-conceit, self-image, self-confidence, and amour propre (a sense of one's own worth; self-respect). Ego is a word that has become very much a part of our daily vocabulary and an accepted part