A conceited person is someone who is excessively vain, egotistical and self-centered. There are a variety of synonyms for a person who displays conceited behavior. Narcissistic, self-absorbed, smug, arrogant, pompous, haughty and vain are just a few examples of terms that can describe this type of personality. Someone who is full of themselves, shows off and brags about their accomplishments, and seeks constant attention and admiration from others, can also be considered conceited. It is important to be aware of these negative traits in order to avoid falling into the trap of becoming a conceited person, and instead strive to cultivate humility and gratitude in our lives.