Egotism

E"go*tism (?; 277), n. [L. ego I + ending -tism for -ism, prob. influenced by other English words in -tism fr. the Greek, where t is not part of the ending, as baptism. See Egoism.] The practice of too frequently using the word I; hence, a speaking or writing overmuch of one's self; self-exaltation; self-praise; the act or practice of magnifying one's self or parading one's own doings. The word is also used in the sense of egoism.

His excessive egotism, which filled all objects with himself.
Hazlitt.

Syn. -- Egotism, Self-conceit, Vanity, Egoism. Self-conceit is an overweening opinion of one's talents, capacity, attractions, etc.; egotism is the acting out of self-conceit, or self-importance, in words and exterior conduct; vanity is inflation of mind arising from the idea of being thought highly of by others. It shows itself by its eagerness to catch the notice of others. Egoism is a state in which the feelings are concentrated on one's self. Its expression is egotism.