Swelled headedness is a term used to describe someone who is overly proud, conceited or arrogant. There are a number of synonyms for this phrase, including "egotism," "narcissism," "vanity," "haughtiness," "pomposity," "self-importance," "arrogance," "pretension," "snobbery," and "hubris." All of these words describe a person who has an exaggerated sense of their own importance or abilities. While it is natural to be proud of one's accomplishments, swelled headedness takes this pride to the point where it becomes unattractive and unhelpful. In order to avoid becoming too swelled-headed, it is important to stay humble and focused on personal growth and improvement.