arbiter

noun
ar*bi*ter \ ˈär-bə-tər \
14th century{ds||1||}
  • a person with power to decide a dispute : judge
  • a person or agency whose judgment or opinion is considered authoritative

arbiter elegantiarum

noun
arbiter el*e*gan*ti*a*rum \ -ˌe-lə-ˌgan-shē-ˈa-rəm \ -ˈer-əm \
1728
  • a person who prescribes, rules on, or is a recognized authority on matters of social behavior and taste
Powered by Merriam-Webster
images meanings .com