arbitressEtymologyFrom arbiter + -ess.nounA female arbiter.“1594, Samuel Daniel, The Tragedy of Cleopatra, Act III, in Delia and Rosamond augmented by Cleopatra, London: Simon Waterson, O Fearefull frowning NEMESIS, Daughter of IVSTICE, most seuere, That art the worlds great Arbitresse, And Queene of causes raigning heere.”