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

- 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"

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

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

"His masterful, pale face." -- Mrs. Browning.