Meaning of “egotism” - Learner’s Dictionary

egotism

noun [ U ] uk us /ˈiːɡəʊtɪzəm/ (also egoism, uk /ˈiːɡəʊɪzəm/ us )

the opinion that you are very important so you are not interested in other people

egotist noun [ C ]
egotistic uk us /ˌiːɡəʊˈtɪstɪk/ adjective (also egotistical, uk /ˌiːɡəʊˈtɪstɪkəl/ us )

(Definition of “egotism” from the Cambridge Learner’s Dictionary © Cambridge University Press)