1) Egocentric 2) Egoistical 3) Of or relating to the self 4) Self-absorbed 5) Self-centered 6) Self-centred 7) Self-involved 8) Selfish 9) Snobby 10) Tough to work with, probably Found on https://www.crosswordclues.com/clue/egoistic
pertaining to or of the nature of egoism. · being centered in or preoccupied with oneself and the gratification of one's own desires; self-centered (opposed to altruistic). Found on https://www.infoplease.com/dictionary/egoistic