Self-conceitedly is an adverb that describes someone behaving in an excessively self-centered or arrogant manner. Some synonyms for this term include egotistically, smugly, pompously, and arrogantly. Egotistically suggests a person who has an exaggerated sense of his own importance, while smugly implies a sense of superiority over others. Pompously refers to a person who speaks or behaves in a grandiose and overly self-important manner, and arrogantly typically applies to someone who is overbearing and dismissive of others. Regardless of the synonym used, self-conceitedly behavior is never attractive and can lead to negative perceptions by others.