Focus on the pronunciation of arbiter
English definition of “arbiter”
/ˈɑːbɪtər/ noun [C]
› someone whose opinion has a lot of influence: arbiter of fashion/style/taste He rose from polite but humble beginnings to become an arbiter of taste and manners.
› LAW a person or organization that has the power to make a decision about what is acceptable or legal: the final/sole/ultimate arbiter It is the country's parliament which remains the final arbiter of which laws are passed and in what form.