Definition of egotism noun from the Oxford Advanced American Dictionary

 

egotism

 noun
noun
NAmE//ˈiɡəˌtɪzəm//
 
(also egoism)[uncountable](disapproving)
 
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the fact of thinking that you are better or more important than anyone else His egotism prevented him from really loving anyone but himself.
NAmE//ˌiɡəˈtɪstɪk//
 
(also egotistical
NAmE//ˌiɡəˈtɪstɪkl//
 
)
adjective
egotistically
 
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NAmE//ˌɪɡəˈtɪstɪkli//
 
adverb a belief that all human beings behave egotistically