1. to destroy or disrupt the organization or orderly arrangement of something
Usage: British spelling; American English typically uses 'disorganize'; transitive verb
2. to throw into confusion or disorder; to make disorganized
Usage: British spelling; American English typically uses 'disorganize'; transitive verb

Examples

• The sudden staff changes disorganised the entire department.
• Heavy traffic disorganised our carefully planned schedule.
• The files were disorganised and difficult to locate.
• His chaotic approach disorganised the project timeline.
• The unexpected announcement disorganised the team's workflow.
• Without proper planning, the event became completely disorganised.