noun🔗ShareThe property of being effective, of achieving results."The effectiveness of the drug was well established."abilityqualityachievementoutcomefunctionbusinessworktoeicChat with AIVocabulary GamePractice Reading
noun🔗ShareThe capacity or potential for achieving results."The effectiveness of the new study methods was evident in the students' improved test scores. "achievementabilityoutcomefunctionqualityprocesstoeicChat with AIVocabulary GamePractice Reading
noun🔗ShareThe degree to which something achieves results."He questioned the effectiveness of the treatment."outcomeachievementqualityabilitytoeicChat with AIVocabulary GamePractice Reading
