1. the quality or state of failing to produce the desired or expected result; lack of effectiveness

Examples

• The ineffectiveness of the old marketing strategy led the company to try a new approach.
• Critics pointed to the ineffectiveness of the policy in reducing crime rates.
• Despite her best efforts, the ineffectiveness of the treatment became clear after several weeks.
• The team's ineffectiveness on defense cost them the game.
• Patients complained about the ineffectiveness of the medication.
• The ineffectiveness of the current system prompted a complete overhaul.