Foppishness is a term that describes someone who is excessively concerned with their appearance and fashion. Some synonyms for foppishness include dandyism, coxcombry, vanity, and narcissism. Dandyism refers to a man who is very concerned with his appearance and dress in particular, while coxcombry implies foolishness and an excess of vanity. Vanity refers to excessive pride in one's appearance, while narcissism refers to extreme self-love and self-admiration. These words capture different aspects of the same phenomenon, and they are all useful for describing someone who is excessively concerned with their appearance.