masterly

from WordNet (r) 3.0 (2006)

masterly
    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}, {masterful}, {masterly}, {virtuoso(a)}]

from The Collaborative International Dictionary of English v.0.48

Masterly \Mas"ter*ly\, a.
   1. Suitable to, or characteristic of, a master; indicating
      thorough knowledge or superior skill and power; showing a
      master's hand; as, a masterly design; a masterly
      performance; a masterly policy. "A wise and masterly
      inactivity." --Sir J. Mackintosh.
      [1913 Webster]

   2. Imperious; domineering; arbitrary.
      [1913 Webster]

from The Collaborative International Dictionary of English v.0.48

Masterly \Mas"ter*ly\, adv.
   With the skill of a master.
   [1913 Webster]

         Thou dost speak masterly.                --Shak.
   [1913 Webster]

[email protected]