Arbiter elegantiae is a Latin phrase that refers to a person who has the ability to judge or dictate matters of taste and style. Synonyms for this term might include aesthetician, connoisseur, maven, expert, or authority on style. Other possible terms might include trendsetter, tastemaker, influencer, or style guru. These people might work in fields like art, fashion, or interior design, or they might simply have a keen eye for detail and a strong sense of personal style. Whatever their expertise or background, the arbiter elegantiae is someone who is respected for their insights, opinions, and refined tastes.