masterful (
http://definr.com/masterful)
adj 1: 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" [syn:
consummate,
masterly,
virtuoso(a)]
2: able to deal authoritatively with affairs; "dismissed the
matter with an imperious wave of her hand" [syn:
imperious]