The Collaborative International Dictionary of English v.0.48:

fabricated \fabricated\ adj.
   formed or conceived by the fancy or imagination; as, a
   fabricated excuse for his absence.

   Syn: fancied, fictional, fictitious, fictive, invented,
        made-up.
        [WordNet 1.5]

The Collaborative International Dictionary of English v.0.48:

Fabricate \Fab"ri*cate\, v. t. [imp. & p. p. Fabricated; p.
   pr. & vb. n. Fabricating.] [L. fabricatus, p. p. of
   fabricari, fabricare, to frame, build, forge, fr. fabrica.
   See Fabric, Farge.]
   1. To form into a whole by uniting its parts; to frame; to
      construct; to build; as, to fabricate a bridge or ship.
      [1913 Webster]

   2. To form by art and labor; to manufacture; to produce; as,
      to fabricate woolens.
      [1913 Webster]

   3. To invent and form; to forge; to devise falsely; as, to
      fabricate a lie or story.
      [1913 Webster]

            Our books were not fabricated with an accomodation
            to prevailing usages.                 --Paley.
      [1913 Webster]

WordNet (r) 3.0 (2006):

fabricated
    adj 1: formed or conceived by the imagination; "a fabricated
           excuse for his absence"; "a fancied wrong"; "a fictional
           character" [syn: fabricated, fancied, fictional,
           fictitious]

Moby Thesaurus II by Grady Ward, 1.0:

67 Moby Thesaurus words for "fabricated":
   assembled, built, cast, coined, conceived, concocted, constructed,
   cooked-up, crafted, created, custom, custom-built, custom-made,
   discovered, extracted, fabulous, fancied, fantasied, fantastic,
   fashioned, fictional, fictitious, figmental, forged, formed,
   gathered, grown, handcrafted, handmade, harvested, hatched,
   homemade, homespun, invented, legendary, machine-made, machined,
   made, made to order, made-up, man-made, manufactured, milled,
   mined, minted, molded, mythical, new-minted, originated, prefab,
   prefabricated, processed, put together, put-up, raised,
   ready-for-wear, ready-formed, ready-made, ready-prepared,
   ready-to-wear, refined, shaped, smelted, trumped-up, well-built,
   well-constructed, well-made