The Collaborative International Dictionary of English v.0.48:

Tumorous \Tu"mor*ous\, a. [L. tumorosus inflated.]
   1. Swelling; protuberant. [R.] --Sir H. Wotton.
      [1913 Webster]

   2. Inflated; bombastic. [R.] --B. Jonson.
      [1913 Webster]

Moby Thesaurus II by Grady Ward, 1.0:

54 Moby Thesaurus words for "tumorous":
   allergic, anemic, apoplectic, arthritic, bellied, bilious,
   bug-eyed, bulged, cancerous, chlorotic, colicky, consumptive,
   dropsical, dyspeptic, edematous, encephalitic, epileptic,
   exophthalmic, goggle, goggled, laryngitic, leprous, luetic,
   malarial, malignant, measly, nephritic, neuralgic, neuritic,
   palsied, paralytic, phthisic, pleuritic, pneumonic, pocky,
   podagric, popeyed, pouched, rachitic, rheumatic, rickety,
   scorbutic, scrofulous, swollen, tabetic, tabid, tubercular,
   tuberculous, tumescent, tumid, tumorigenic, turgescent, turgid,
   ventricose