self-important.

Overly convinced of one's own importance or authority.

Use it for

Words that belong together

• self-important manner
• self-important official

On the page

The self-important official turned a simple request into a ceremony.

Usage notes

Primary category: psychology / human behavior. Forms: Comparative more self-important; superlative most self-important when comparison is meaningful. Legacy lexical fields mirror sense 1 only. Use numbered sense fields for all meanings. Established modern English lexical item. No separate regional spelling or grammatical inflection entry. Writing functions: character, behavior. Commonness: moderately common.