The Collaborative International Dictionary of English v.0.48:

Disarrangement \Dis`ar*range"ment\, n.
   The act of disarranging, or the state of being disarranged;
   confusion; disorder. --Cowper.
   [1913 Webster]

WordNet (r) 3.0 (2006):

disarrangement
    n 1: a condition in which an orderly system has been disrupted
         [syn: disorganization, disorganisation,
         disarrangement]

Moby Thesaurus II by Grady Ward, 1.0:

49 Moby Thesaurus words for "disarrangement":
   Doppler effect, deracination, derangement, disarray,
   disarticulation, discomfiture, discomposure, disconcertedness,
   discontinuity, disharmony, dishevelment, disintegration,
   disjointing, disjunction, dislocation, disorder, disorderliness,
   disorganization, displacement, disproportion, disruption,
   disturbance, entropy, forcible shift, haphazardness, heterotopia,
   incoherence, indiscriminateness, inharmonious harmony,
   irregularity, luxation, most admired disorder, nonsymmetry,
   nonuniformity, perturbation, promiscuity, promiscuousness,
   randomness, red shift, removal, ripping out, shift, turbulence,
   unhinging, unjointing, unsymmetry, ununiformity, uprooting,
   upset