conceitedly

This adverb describes an action performed with an air of superiority or excessive self-importance. It carries a strong negative connotation, suggesting that the person is not only proud but vain and oblivious to the annoyance they cause others. It is typically used to describe the manner of speaking, behaving, or presenting oneself.

Because it is a derivative of the adjective "conceited," the word is relatively formal and is more common in written narratives or descriptive critiques than in casual spoken conversation. In everyday speech, people are more likely to use phrases like "arrogantly" or "with a big head."