ar·bi·ter
noun/ˈɑːbɪtə(r)/
/ˈɑːrbɪtər/
(formal)- arbiter (of something) a person with the power or influence to make judgements and decide what will be done or accepted
仲裁人；公断人；裁决人；权威人士 - The law is the final arbiter of what is considered obscene.
何谓猥亵最终由法律裁决。 - an arbiter of taste/style/fashion
鉴赏／款式／时装权威 - This style would be dismissed as too ornate by contemporary arbiters of taste.
当代鉴赏权威人士会以过分华丽为由摒弃这种式样。
Word Originlate Middle English: from Latin, ‘judge, supreme ruler’. - The law is the final arbiter of what is considered obscene.