Unsystematic (adjective)

1. Not characterized by having a systematic plan or method.
2. Lacking organization or structure.

Origin:

Derived from the word 'systematic' meaning characterized by having a systematic plan or method.

Examples:

1. The researcher's unsystematic approach resulted in many errors and inconsistencies in the data.
2. The company's unsystematic management led to many inefficiencies and problems.
3. The student's unsystematic study habits resulted in poor performance on exams.
4. The detective's unsystematic investigation resulted in many leads being overlooked.
5. The organization's unsystematic processes led to many mistakes and delays.