An arbiter of taste is someone who has the authority to determine what is considered stylish, fashionable, and tasteful. Synonyms for this term include tastemaker, opinion leader, style influencer, culture guru, fashionista, and trendsetter. These individuals possess a keen eye for aesthetics and have the ability to influence the tastes and preferences of others. They are often relied upon to provide guidance and insight when it comes to matters of style and culture. Whether it's fashion, design, or the arts, an arbiter of taste is someone who has the power to shape the trends of the future and is looked upon as a respected authority in their field.