1. the state of being disorganized; lack of order, system, or planning
Usage: British spelling; American English uses 'disorganization'; uncountable noun
2. the process of breaking up or destroying the organization of something
Usage: British spelling; American English uses 'disorganization'

Examples

• The disorganisation in the office made it difficult to find important documents.
• Her desk was a complete disorganisation of papers and files.
• The project failed due to poor planning and general disorganisation.
• The disorganisation of the event led to long delays and frustrated attendees.
• After the merger, there was temporary disorganisation in the company's departments.
• The teacher complained about the disorganisation of the students' work.
• Financial disorganisation can lead to serious problems for a business.