The Collaborative International Dictionary of English v.0.48:

packaged \packaged\ (p[a^]k"[asl]jd), adj.
   Enclosed in a package[2] or protective covering; as, packaged
   cereals. [Narrower terms: prepackaged, pre-packaged,
   prepacked ] {unpackaged, loose

   Syn: wrapped, done up.
        [WordNet 1.5]

WordNet (r) 3.0 (2006):

packaged
    adj 1: enclosed in a package or protective covering; "packaged
           cereals" [ant: unpackaged]

Moby Thesaurus II by Grady Ward, 1.0:

74 Moby Thesaurus words for "packaged":
   accumulated, agglomerate, aggregate, amassed, armored, assembled,
   bunched, bundled, cased, ceiled, cloaked, clouded, clumped,
   clustered, coated, collected, combined, conglomerate, congregate,
   congregated, coped, covered, covert, cowled, cumulate, curtained,
   eclipsed, encapsulated, encapsuled, encased, enveloped, enwrapped,
   fascicled, fasciculated, filmed, floored, gathered, glomerate,
   heaped, hooded, housed, in session, joined, joint, knotted,
   leagued, loricate, loricated, lumped, mantled, masked, massed,
   meeting, muffled, obscured, occulted, paved, piled, roofed-in,
   screened, scummed, sheathed, shelled, shielded, shrouded, stacked,
   swathed, tented, under cover, veiled, walled, walled-in, wrapped,
   wrapped up