This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

• Lexulous
• Wordscraper
• Wordosaur

adj. Having or showing the knowledge or skill of a master. See Usage Note at masterful.

ad. With the skill of a master.

adj. That has been executed in the manner of one who is a master; extremely competently.

ad. In a masterful manner; competently.

adj. Suitable to, or characteristic of, a master; indicating thorough knowledge or superior skill and power; showing a master's hand

adj. Imperious; domineering; arbitrary.

ad. With the skill of a master.

Pertaining to or characteristic of a master; characteristic of one who is master of his art or subject.

Acting like a master; imperious; domineering; masterful.

In a masterly manner; with the skill or ability of a master.

adj. having or revealing supreme mastery or skill

"Christ in masterly fashion drew a distinction between God and emperor while at the same time decreeing obedience to both God and emperor [1] – a fact that did not prevent the imperial procurator's condemnation of Christ to death on the cross."

skilled   

imperious    domineering    arbitrary    able   

admirable    lucid    exhaustive    skillful    comprehensive