Meaning of “egotism” - Learner’s Dictionary

egotism

noun [ U ] us uk /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 adjective us uk /ˌiːɡəʊˈtɪstɪk/ also egotistical, uk /ˌiːɡəʊˈtɪstɪkəl/ us

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