recumbent

from WordNet (r) 3.0 (2006)

recumbent
    adj 1: lying down; in a position of comfort or rest [syn:
           {accumbent}, {decumbent}, {recumbent}]

from The Collaborative International Dictionary of English v.0.48

Recumbent \Re*cum"bent\ (-bet), a. [L. recumbens, -entis, p. pr.
   of recumbere. See {Recumb}, {Incumbent}.]
   Leaning; reclining; lying; as, the recumbent posture of the
   Romans at their meals. Hence, figuratively; Resting;
   inactive; idle. -- {Re*cum"bent*ly}, adv.
   [1913 Webster]

from Moby Thesaurus II by Grady Ward, 1.0

81 Moby Thesaurus words for "recumbent":
      accumbent, aslant, aslope, atilt, bevel, beveled, bias, biased,
      canting, careening, couchant, couche, crawling, crouched, debased,
      decumbent, depressed, draped, flat, groveling, horizontal,
      inclinational, inclinatory, inclined, inclining, knee-high,
      knocked flat, laid low, leaning, listing, lolling, lounging, low,
      low-built, low-hung, low-level, low-leveled, low-lying, low-set,
      low-statured, lying, lying down, neap, out of plumb, out of square,
      pitched, procumbent, prone, prostrate, raking, reclining, reposing,
      resupine, runty, shelving, shelvy, short, sideling, sidelong,
      slant, slanted, slanting, slantways, slantwise, sloped, sloping,
      sprawled, sprawling, spread, squat, squatty, stooped,
      stretched out, stumpy, supine, tilted, tilting, tipped, tipping,
      tipsy, unelevated