Englishegotist (also egoist)
noun
boxing is a sport that breeds egotists and exhibitionists:
self-seeker, egocentric, egomaniac, self admirer, narcissist;
boaster, brag, bragger, braggart, show-off;
informal blowhard, swank, big-head;
North American, informal showboat;
Australian, New Zealand, informal skite;
British, informal , dated swankpot.
▷antonyms altruist.
egotist Oxford Dictionary of English