DictionarypompousSelf-important
adjective

pompous

POM-pus/ˈpɑːmpəs/

Exaggeratedly grand or formal in a way that suggests self-importance.

The pompous guest poses grandly on a small stool at the modest gathering.

At a modest neighborhood gathering, an overdressed man assumes an absurdly grand, rigid pose on a small step stool, chin raised and one hand ceremoniously pressed to his chest.
Etymology

Pomp evokes a grand procession and its public display. Describing someone as full of such display turns outward grandeur into a criticism of exaggerated dignity and self-importance.

In context

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constantly quoting my friend Governor C or my intimate friend the president is pompous and in bad taste
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More examples

  • His speech was pompous and dull.
  • She disliked the pompous tone.
  • The invitation sounded unnecessarily pompous.

Forms

pompous

pomposity noun — exaggerated grandness and self-importance

Similar words

pretentious
Emphasizes claims to importance or sophistication.
grandiose
Emphasizes exaggerated scale or ambition.