词根：arbit, arbitr- = judge, 表示“判断”

arbiter n. 仲裁人；泰斗（arbit+er表示人）

arbirary a. 武断的（arbitr+ary→做出[自己的]判断→武断的）

arbitrate v. 仲裁，公断（arbitr+ate）

词根词缀：arbitr-, arbit-

【来源及含义】Latin: consider, judge; spectator, listener, witness; originally, "decided by one's own discretion or judgment"

【同源单词】Ad arbitrium, arbiter, arbitrable, arbitrage, arbitrager, arbitral