The word "stuckupness" is a colloquial term used to describe someone who is arrogant, conceited, and snobbish. However, there are several synonyms for this term, which include pretentiousness, haughtiness, snobbishness, superiority complex, and narcissism. All of these words imply an individual who believes they are better than others and is excessively proud and self-centered. While people may use the term "stuckupness" casually, it is essential to recognize that referring to someone this way can be hurtful and disrespectful. It's better to use more formal language to describe these negative traits, as it is more professional and avoids negative connotations associated with slang terms.