1. not done or acting according to a fixed plan or system; lacking method or organization

Examples

• Her unsystematic approach to studying made it difficult to retain information.
• The company’s unsystematic record-keeping led to confusion during the audit.
• His unsystematic way of organizing files frustrated his coworkers.
• The research was criticized for its unsystematic data collection methods.
• She took an unsystematic approach to cleaning, jumping from room to room.
• The unsystematic arrangement of books made finding specific titles nearly impossible.