Masterfully

adv.

1.

In a masterful manner; imperiously. A lawless and rebellious man who held lands masterfully and in high contempt of the royal authority. - Macaulay.

Adv.	1.	masterfully - in a skillfully masterful manner; with the skill of a master; "the young boy played the violin sonata masterfully"
	2.	masterfully - in a domineering and masterful manner; "his gaze held hers masterfully"

ably, adeptly, adroitly, agilely, aptly, arbitrarily, artfully, artistically, autocratically, brilliantly, capably, cleverly, competently, cunningly, deftly, despotically, dexterously, dextrously, dictatorially, efficiently, excellently, expertly, featly, handily, high-handedly, imperiously, ingeniously, magisterially, neatly, nimbly, overbearingly, peremptorily, proficiently, resourcefully, skillfully, spryly, superbly, tyrannically, well, with consummate skill, with finesse, with genius, with skill