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Word

effectiveness

noun C1
/ɪˈfɛk.tɪv.nɪs/

Meanings

noun

the ability of a method, action, or system to produce the desired result

effectiveness: the ability of a method, action, or system to produce the desired result
noun

the extent to which a person’s communication or leadership achieves the intended impact

effectiveness: the extent to which a person’s communication or leadership achieves the intended impact

Definition

Effectiveness is the degree to which something achieves its intended result.

Effectiveness refers to how well an action, plan, or tool produces the outcome it is meant to produce. It focuses on results rather than effort. Something can be efficient but not effective if it is done quickly yet fails to meet the goal.

Examples

  • The campaign’s effectiveness depended on whether it changed long-term habits, not just short-term clicks.
  • I questioned the effectiveness of the new workflow after deadlines started slipping again.
  • She evaluated the effectiveness of her feedback by tracking how quickly the team corrected recurring errors.
  • They improved the effectiveness of the training by adding realistic simulations and structured reflection.

Common mistake

Learners often confuse effectiveness with efficiency: effectiveness is about achieving the goal, while efficiency is about using minimal time or resources.