idiolatry
/ˌɪdiˈɑːlətri/
noun
- Excessive admiration or worship of oneself; self-idolatry.
- His constant self-praise bordered on idiolatry.
- Some critics accused the celebrity of idiolatry for her endless social media posts about herself.
- The memoir revealed a disturbing level of idiolatry in the author's view of his own achievements.
Synonyms