List of self-important synonyms and self-important related words.
arrogant, assured, big, big-league, big-name, big-time, bigwig, bigwigged, bloated, bombastic, cocksure, complacent, conceited, confident, consequential, considerable, convinced, decided, determined, double-barreled, earthshaking, egotistical, flatulent, formal, gassy, grand, grandiloquent, great, haughty, heavyweight, high-powered, hubristic, important, inflated, magisterial, major, material, momentous, name, narcissan, narcissine, narcissistic, narcistic, overbearing, overconfident, overproud, oversure, overweening, persuaded, poised, pompous, pontifical, positive, presumptuous, proud, puffy, reassured, secure, self-absorbed, self-admiring, self-approving, self-assuming, self-assured, self-complacent, self-confident, self-congratulating, self-congratulatory, self-content, self-contented, self-delighting, self-endeared, self-esteeming, self-gratulating, self-gratulatory, self-loving, self-reliant, self-respecting, self-satisfied, self-seeking, self-sufficient, significant, smug, snobbish, snooty, snotty, solemn, stilted, stuck-up, stuffy, substantial, superior, sure, swollen, tumid, turgid, unafraid, undoubting, unfaltering, unhesitating, unwavering, vain, vainglorious, world-shaking