egotism
ego·tism
noun
1.
an exaggerated opinion of your own importance
2.
an inflated feeling of pride in your superiority to others
Origin
From Latin ego (“I”) + -t- (perhaps modelled on dogmatism, despotism, idiotism) + -ism.
Related words
Narrower terms
WordNet 2.1 (Princeton University). Wiktionary (CC BY-SA). CMU Pronouncing Dictionary. WordNet 2.1 Copyright Princeton University. All rights reserved. Wiktionary content is available under the Creative Commons Attribution-ShareAlike Licence.