The Collaborative International Dictionary of English v.0.48:

perfected \perfected\ adj.
   1. Brought into final form; completely formed; -- of plans,
      ideas, etc.
      [WordNet 1.5]

   2. Refined to a state of excellence; -- of e.g. skills or the
      products of skills.

   Syn: finished.
        [WordNet 1.5]

The Collaborative International Dictionary of English v.0.48:

Perfect \Per"fect\ (p[~e]r*f[e^]kt" or p[~e]r"f[e^]kt; 277), v.
   t. [imp. & p. p. Perfected; p. pr. & vb. n. Perfecting.]
   [L. perfectus, p. p. of perficere. See Perfect, a.]
   To make perfect; to finish or complete, so as to leave
   nothing wanting; to give to anything all that is requisite to
   its nature and kind.
   [1913 Webster]

         God dwelleth in us, and his love is perfect in us. --1
                                                  John iv. 12.
   [1913 Webster]

         Inquire into the nature and properties of the things, .
         . . and thereby perfect our ideas of their distinct
         species.                                 --Locke.
   [1913 Webster]

   Perfecting press (Print.), a press in which the printing on
      both sides of the paper is completed in one passage
      through the machine.
      [1913 Webster]

   Syn: To finish; accomplish; complete; consummate.
        [1913 Webster] perfectibility

WordNet (r) 3.0 (2006):

perfected
    adj 1: (of plans, ideas, etc.) perfectly formed; "a graceful but
           not yet fully perfected literary style"

Moby Thesaurus II by Grady Ward, 1.0:

69 Moby Thesaurus words for "perfected":
   SOL, accomplished, advanced, all bets off, all off, all over,
   all up, ameliorated, archetypical, at an end, beautified, bettered,
   canceled, civilized, classic, complete, concluded, consummate,
   converted, cultivated, cultured, dead, decided, defunct, deleted,
   developed, done, done for, done with, educated, embellished, ended,
   enhanced, enriched, exemplary, expert, expunged, extinct, fini,
   finished, fully developed, improved, kaput, masterful, masterly,
   mature, matured, model, over, polished, proficient, quintessential,
   refined, reformed, ripe, ripened, set at rest, settled, shot,
   terminated, through, through with, transfigured, transformed,
   virtuosic, washed up, wiped out, wound up, zapped