WordNet (r) 3.0 (2006):

enlightened
    adj 1: having knowledge and spiritual insight [ant:
           unenlightened]
    2: characterized by full comprehension of the problem involved;
       "an educated guess"; "an enlightened electorate" [syn:
       educated, enlightened]
    n 1: people who have been introduced to the mysteries of some
         field or activity; "it is very familiar to the initiate"
         [syn: initiate, enlightened] [ant: uninitiate]

Moby Thesaurus II by Grady Ward, 1.0:

86 Moby Thesaurus words for "enlightened":
   ablaze, abreast of, aglow, alight, au courant, aware,
   bathed with light, bespangled, blase, briefed, brightened,
   broad-minded, candlelit, careful, circumspect, civilized,
   considerate, cultivated, disabused, disappointed, discreet,
   discriminating, discriminative, disenchanted, disillusioned,
   educated, firelit, gaslit, illuminated, in a blaze, in the know,
   informed, instructed, irradiate, irradiated, judgmatic, judicial,
   judicious, knowledgeable, lamplit, lanternlit, liberal, lighted,
   lightened, lit, lit up, literate, luminous, moonlit, open-minded,
   politic, posted, primed, provident, prudent, prudential,
   put straight, rational, reasonable, reflecting, reflective,
   robbed of illusion, schooled, sensible, set right, sophisticated,
   spangled, star-spangled, star-studded, starlit, studded, sunlit,
   taught, thoughtful, tinseled, trained, uncharmed, undeceived,
   unspelled, up on, up-to-date, versed, well-advised, well-informed,
   well-judged, well-versed