Synonyms of self-centered

2 Syllables
thoughtless, pompous, fustian, selfish
3 Syllables
self-loving, unthoughtful, hot-headed, grandstanding, self-seeking, self-serving, asocial, swellheaded, egoistic, puffed-up, know-it-all, unthankful
4 Syllables
egotistic, self-concerned, unbothered, highfalutin, self-absorbed, self-indulgent, inward-looking, self-involved, egocentric, narcissistic, self-admiring, egoistical, independent, ungrateful, self-sufficient, unconcerned, power-loving
5 Syllables
megalomaniac, unappreciated, opportunistic, egotistical, egomaniacal, self-interested
6 Syllables
inappreciative, inconsiderate, individualistic, unappreciative