grandiosity

/ɡrænˈdi.ɑː.sə.ti/
noun
  1. The quality of being grand or impressive, often in an exaggerated or unrealistic way; a sense of self-importance or magnificence.
    • The grandiosity of the wedding was overwhelming, with hundreds of guests and a live orchestra.
    • Psychologists sometimes see grandiosity as a sign of certain personality traits.
    • His grandiosity made him believe he could become president overnight.
Synonyms
What does "grandiosity" mean? | whatsthatwordmean | whatsthatwordmean