# effectiveness

Pronunciation: say "i-FEK-tiv-nis" /ɪˈfɛk.tɪv.nɪs/

## Noun

1. The quality of successfully producing the results that were intended.
   - Simple: The quality of working well and getting the results you want.
   - _The committee questioned the program's effectiveness after reviewing the results._
   - _Researchers compared the effectiveness of two very different teaching methods._
2. The measure of how fully something achieves the results it aims for.
   - Simple: How well something works and reaches its goal.
   - _Analysts assessed the campaign's effectiveness using sales data from each region._
   - _The study ranked each pesticide by its effectiveness against common pests._
3. The capacity something holds for producing results, considered as a potential rather than a measured outcome.
   - Simple: The power something has to get results, even before it is used.
   - _Years of scandal have damaged the agency's credibility and effectiveness._
   - _Designers built the filter for maximum effectiveness under heavy loads._

## Origin

Formed from the adjective "effective" combined with the noun-forming suffix "-ness."

Source: DictionaryAI, https://dictionaryai.com/define/effectiveness (written from Wiktionary data, CC BY-SA 4.0: https://creativecommons.org/licenses/by-sa/4.0/).