The Collaborative International Dictionary of English v.0.48:

Jumble \Jum"ble\, v. i.
   To meet or unite in a confused way; to mix confusedly.
   --Swift.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Jumble \Jum"ble\, n.
   1. A confused mixture; a mass or collection without order;
      as, a jumble of words.
      [1913 Webster]

   2. A small, thin, sugared cake, usually ring-shaped. [Also
      spelled jumbal.]
      [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Jumble \Jum"ble\, v. t. [imp. & p. p. Jumbled; p. pr. & vb. n.
   Jumbling.] [Prob. fr. jump, i. e., to make to jump, or
   shake.]
   To mix in a confused mass; to put or throw together without
   order; -- often followed by together or up.
   [1913 Webster]

         Why dost thou blend and jumble such inconsistencies
         together?                                --Burton.
   [1913 Webster]

         Every clime and age
         Jumbled together.                        --Tennyson.
   [1913 Webster]

WordNet (r) 3.0 (2006):

jumble
    n 1: a confused multitude of things [syn: clutter, jumble,
         muddle, fuddle, mare's nest, welter, smother]
    2: small flat ring-shaped cake or cookie [syn: jumble,
       jumbal]
    3: a theory or argument made up of miscellaneous or incongruous
       ideas [syn: patchwork, hodgepodge, jumble]
    v 1: be all mixed up or jumbled together; "His words jumbled"
         [syn: jumble, mingle]
    2: assemble without order or sense; "She jumbles the words when
       she is supposed to write a sentence" [syn: jumble,
       confuse, mix up]
    3: bring into random order [syn: scramble, jumble, throw
       together]

Moby Thesaurus II by Grady Ward, 1.0:

210 Moby Thesaurus words for "jumble":
   Aesopian language, Babel, Boston cream pie, Greek, admix,
   all sorts, alloy, amalgamate, angel cake, angel food cake, argot,
   arsy-varsiness, assemblage, assortment, babble, baked Alaska,
   ball up, befuddlement, bemingle, bewilderment, blend, blur,
   blur distinctions, bollix up, bother, botheration, broad spectrum,
   cake, cant, chaos, cheesecake, chocolate cake, cipher, cloud,
   clutter, coalesce, code, coffee cake, combine, commingle, commix,
   complicate, compose, compound, concoct, confound, confuse,
   confusion, conglomerate, conglomeration, cryptogram, cupcake, daze,
   deform, derange, disarrange, disarray, discombobulation,
   discomfiture, discompose, discomposure, disconcertion, dishevel,
   disorder, disorganization, disorganize, disorientation, distort,
   disturb, disturbance, double Dutch, embarrassment, emulsify,
   entangle, farrago, flummox, flurry, fluster, flutter, fog, fog up,
   foul up, frenzy, fruitcake, fuddle, fuddlement, fumble, fuse,
   gallimaufry, garble, genoise, gibberish, gift of tongues,
   gingerbread, glossolalia, gobbledygook, hash, haze, helter-skelter,
   higgledy-piggledy, hodgepodge, homogenize, honey cake, hotchpot,
   hotchpotch, hysteron proteron, immingle, immix, integrate,
   interblend, interlace, interlard, intermingle, intermix,
   intertwine, interweave, jargon, jelly roll, jumble together,
   jungle, knead, knock galley-west, layer cake, litter, magpie,
   make unintelligible, marble cake, mash, maze, medley, melange,
   merge, mess, mess up, mingle, mingle-mangle, miscellany, mishmash,
   mist, mix, mix up, mixed bag, muck up, muddle, muddlement, muss up,
   mystify, noise, obfuscate, obscure, odds and ends, olio,
   olla podrida, omnium-gatherum, overlook distinctions, pasticcio,
   pastiche, patchwork, perplexity, perturb, perturbation, pi,
   play hob with, pother, potpourri, pound cake, pucker, riffle,
   ruffle, rummage, salad, salmagundi, sauce, savarin, scramble,
   screw up, secret language, shadow, shortcake, shuffle, slang,
   snafu, snarl up, spice cake, sponge cake, stew, stir up, sweat,
   swivet, syncretize, tangle, tea cake, throw together, tizzy,
   topsy-turviness, topsy-turvydom, toss together, tumble, turmoil,
   unform, unholy mess, unsettle, unsettlement, unshape, upset,
   welter, what you will, white cake, work, yellow cake