Inclined to play the master; domineering; imperious; arbitrary.

able to deal authoritatively with affairs; "dismissed the matter with an imperious wave of her hand"

Having the skill or power of a master; indicating or expressing power or mastery.

having or revealing supreme mastery or skill; "a consummate artist"; "consummate skill"; "a masterful speaker"; "masterful technique"; "a masterly performance of the sonata"; "a virtuoso performance"