The Collaborative International Dictionary of English v.0.48:

Rosy \Ros"y\, a. [Compar. Rosier; superl. Rosiest.]
   Resembling a rose in color, form, or qualities; blooming;
   red; blushing; also, adorned with roses.
   [1913 Webster]

         A smile that glowed
         Celestial rosy-red, love's proper hue.   --Milton.
   [1913 Webster]

         While blooming youth and gay delight
         Sit thy rosy cheeks confessed.           --Prior.
   [1913 Webster]

   Note: Rosy is sometimes used in the formation of
         self?xplaining compounde; as, rosy-bosomed,
         rosy-colored, rosy-crowned, rosy-fingered, rosy-tinted.
         [1913 Webster]

   Rosy cross. See the Note under Rosicrucian, n.
      [1913 Webster]

WordNet (r) 3.0 (2006):

rosy
    adj 1: reflecting optimism; "a rosy future"; "looked at the
           world through rose-colored glasses" [syn: rose-colored,
           rosy]
    2: having the pinkish flush of health [syn: flushed, rose-
       cheeked, rosy, rosy-cheeked]
    3: of blush color; "blushful mists" [syn: blushful, rosy]
    4: presaging good fortune; "she made a fortunate decision to go
       to medical school"; "rosy predictions" [syn: fortunate,
       rosy]

Moby Thesaurus II by Grady Ward, 1.0:

108 Moby Thesaurus words for "rosy":
   Leibnizian, auspicious, balmy, beaming, blithe, blithesome,
   blooming, blossoming, blowzed, blowzy, blushing, booming, bright,
   bright and sunny, burnt, cerise, cheerful, cheery, cherry,
   chiliastic, clear, coral, couleur de rose, elated, encouraging,
   eupeptic, euphoric, exalted, exhilarated, exuberant, fair, fat,
   favorable, florid, flourishing, flowering, flush, flushed, fresh,
   fresh as April, fruiting, full-blooded, genial, glad, gladsome,
   glowing, going strong, green, halcyon, happy, hectic, high,
   hopeful, in full swing, in good case, in good spirits,
   in high spirits, incarnadine, irrepressible, laughing, likely,
   millenarian, millennialistic, of good cheer, optimistic, palmy,
   perfectibilitarian, perfectionist, pink, pinkish, pinky, piping,
   pleasant, primrose, promising, prospering, radiant, red,
   red-complexioned, red-faced, red-fleshed, reddish, riant, rose,
   rose-colored, rose-hued, rose-red, roseate, rosy-cheeked, rubicund,
   ruby, ruddy, ruddy-complexioned, ruddy-faced, salmon, sanguine,
   sanguineous, sleek, smiling, sparkling, sunburned, sunny, thriving,
   upbeat, utopian, vigorous, winsome, youthful