effectiveness.

The extent to which something achieves its intended result.

Use it for

Words that belong together

• assess effectiveness
• effectiveness of a policy
• limited effectiveness

On the page

The study assessed the effectiveness of the tutoring program.

Lower costs did not establish the treatment’s effectiveness.

Her evaluation judged effectiveness against the project’s stated goals.

Usage notes

Primary category: academic. Forms: Mass noun; usually no plural needed. Legacy lexical fields mirror sense 1 only. Use numbered sense fields for all meanings.