The Collaborative International Dictionary of English v.0.48:

Inordinate \In*or"di*nate\, a. [L. inordinatus disordered. See
   In- not, and Ordinate.]
   Not limited to rules prescribed, or to usual bounds;
   irregular; excessive; immoderate; as, an inordinate love of
   the world. "Inordinate desires." --Milton. "Inordinate
   vanity." --Burke. -- In*or"di*nate*ly, adv. --
   In*or"di*nate*ness, n.
   [1913 Webster]

WordNet (r) 3.0 (2006):

inordinate
    adj 1: beyond normal limits; "excessive charges"; "a book of
           inordinate length"; "his dress stops just short of undue
           elegance"; "unreasonable demands" [syn: excessive,
           inordinate, undue, unreasonable]

Moby Thesaurus II by Grady Ward, 1.0:

116 Moby Thesaurus words for "inordinate":
   a bit much, abandoned, aggrandized, amplified, ballyhooed,
   bibulous, bigoted, boundless, crapulent, crapulous, cutthroat,
   disproportionate, dizzy, egregious, enormous, exacting,
   exaggerated, excessive, exorbitant, extortionate, extra,
   extravagant, extreme, extremist, fabulous, fanatic, fancy,
   gigantic, gluttonous, gouging, grandiloquent, gratuitous,
   grossly overpriced, haggard, high, high-flown, hyperbolic,
   hypertrophied, immoderate, incontinent, indulgent, inflated,
   inflationary, intemperate, irrational, magnified, monstrous,
   out of bounds, out of sight, outrageous, overbig, overdeveloped,
   overdone, overdrawn, overemphasized, overemphatic,
   overenthusiastic, overestimated, overgreat, overgrown,
   overindulgent, overindulging, overlarge, overmuch, overpraised,
   overpriced, overreligious, oversold, overstated, overstressed,
   overweening, overwrought, overzealous, perfervid, preposterous,
   prodigal, profuse, prohibitive, puffed, rabid, self-indulgent,
   skyrocketing, spiraling, steep, stiff, stretched, supererogatory,
   superfluous, superlative, surplus, swinish, too much, touted,
   towering, ultrazealous, unbridled, uncalled-for, unconscionable,
   unconstrained, uncontrolled, undisciplined, undue, unfrugal,
   unlimited, unmeasurable, unmeasured, unreasonable, unrestrained,
   untempered, unthrifty, unwarranted, usurious, wanton, wild-eyed,
   wild-looking, zealotic