CEFR B2
unsystematic
adjective
Meaning
Not done or arranged according to a fixed plan, method, or system; random or haphazard.
Examples
- The researcher's unsystematic collection of data led to unreliable conclusions.
- His approach to learning new vocabulary was unsystematic, jumping from one topic to another without a clear strategy.
Synonyms: random, haphazard, disorganized, erratic, desultory