unsystematic

The data collection process was unsystematic.

His approach to problem-solving is often unsystematic.

The company's filing system is unsystematic and hard to navigate.

Her study habits are quite unsystematic.

The teacher criticized the student's unsystematic note-taking.

The project suffered from unsystematic planning.

His unsystematic approach to budgeting led to financial problems.

The lack of a systematic approach resulted in unsystematic outcomes.

Her unsystematic work habits affected her productivity.

The team's unsystematic communication led to misunderstandings.