disorganisation
1. [ noun ] a condition in which an orderly system has been disrupted
Synonyms: disarrangement disorganization
Related terms: disorderliness disarrange disorganize
2. [ noun ] the disturbance of a systematic arrangement causing disorder and confusion
Synonyms: disorganization
Examples:

"the disorganization of the enemy troops by a flank attack"

Related terms: disturbance disorganize
Similar spelling:   disorganization
  disorganised
  disorganized