The Collaborative International Dictionary of English v.0.48:

Unordered \Unordered\
   See ordered.

WordNet (r) 3.0 (2006):

unordered
    adj 1: not arranged in order [syn: disordered, unordered]
           [ant: ordered]
    2: not arranged in order hierarchically [syn: ungraded,
       unordered, unranked]

Moby Thesaurus II by Grady Ward, 1.0:

76 Moby Thesaurus words for "unordered":
   aimless, amorphic, amorphous, anarchic, baggy, blobby, blurred,
   blurry, capricious, casual, chaotic, characterless, confused,
   desultory, disarticulated, discontinuous, disjunct, disordered,
   disorderly, dispersed, disproportionate, erratic, featureless,
   fitful, formless, frivolous, fuzzy, gratuitous, haphazard, hazy,
   hit-or-miss, immethodical, inchoate, incoherent, indecisive,
   indefinite, indeterminate, indiscriminate, inform, irregular,
   kaleidoscopic, lumpen, meaningless, misshapen, misty, nondescript,
   nonsymmetrical, nonsystematic, nonuniform, obscure, orderless,
   planless, promiscuous, random, senseless, shapeless, spasmodic,
   sporadic, straggling, straggly, systemless, unarranged,
   unclassified, unclear, undefined, undirected, ungraded, unjoined,
   unmethodical, unorganized, unsorted, unsymmetrical, unsystematic,
   ununiform, vague, wandering