arbiter

n. 权威人士，泰斗

aquamarine, aquaplane, Aquarian, aquarium, Aquarius, aquatic, aquatint, aqueduct, aqueous, aquifer, aquiline, Arab, arabesque, Arabia, Arabian, Arabic, arabic numerals (also arabic figures), Arabist, arable, arachnid, arbitrarily, arbitrariness, arbitrary, arbitrate, arbitration, arbitrator, arboreal, arboretum, arbour (US arbor), arc, arc lamp, arc light, arc welding, arcade, arcane, arch, arch-, arch-enemy, archaeological, archaeologist,