Select the most appropriate antonym of the given word.

Sporadic

Systematic

The most appropriate antonym of the word sporadic is systematic.

• Sporadic means "occurring at irregular intervals or only in a few places; scattered or isolated."
• Systematic means "done or arranged according to a plan or system."

The other words do not have the opposite meaning of sporadic.

• Scattered means "distributed over a wide area or in a haphazard way."
• Random means "without definite aim or purpose; haphazard."