The Collaborative International Dictionary of English v.0.48:

experienced \ex*pe"ri*enced\ ([e^]ks*p[=e]"r[i^]*enst), p. p. &
   a.
   Taught by practice or by repeated observations; skillful or
   wise by means of trials, use, or observation; as, an
   experienced physician, workman, soldier; an experienced eye.
   [1913 Webster]

         The ablest and most experienced statesmen. --Bancroft.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Experience \Ex*pe"ri*ence\, v. t. [imp. & p. p. Experienced
   ([e^]ks*p[=e]"r[i^]*enst); p. pr. & vb. n. Experiencing
   ([e^]ks*p[=e]"r[i^]*en*s[i^]ng).]
   1. To make practical acquaintance with; to try personally; to
      prove by use or trial; to have trial of; to have the lot
      or fortune of; to have befall one; to be affected by; to
      feel; as, to experience pain or pleasure; to experience
      poverty; to experience a change of views.
      [1913 Webster]

            The partial failure and disappointment which he had
            experienced in India.                 --Thirwall.
      [1913 Webster]

   2. To exercise; to train by practice.
      [1913 Webster]

            The youthful sailors thus with early care
            Their arms experience, and for sea prepare. --Harte.
      [1913 Webster]

   To experience religion (Theol.), to become a convert to the
      doctrines of Christianity; to yield to the power of
      religious truth.
      [1913 Webster]

WordNet (r) 3.0 (2006):

experienced
    adj 1: having experience; having knowledge or skill from
           observation or participation [syn: experienced,
           experient] [ant: inexperienced, inexperient]

Moby Thesaurus II by Grady Ward, 1.0:

68 Moby Thesaurus words for "experienced":
   acclimated, acclimatized, accommodated, accomplished, accustomed,
   adapted, adept, adjusted, au fait, blase, capable, case-hardened,
   competent, conditioned, cosmopolitan, cosmopolite, efficient,
   expert, familiarized, hardened, in the know, inured, knowing,
   knowledgeable, master, masterly, mature, matured, naturalized,
   not born yesterday, old, old-line, old-time, on the ball,
   orientated, oriented, practical, practiced, prepared, professional,
   proficient, qualified, ripe, ripened, run-in, sagacious, sage,
   savvy, seasoned, shrewd, skilled, skillful, sophisticated, trained,
   tried, tried and true, used to, versed, vet, veteran,
   well-informed, well-versed, wise, wont, wonted, world-wise,
   worldly, worldly-wise