effectiveness
capability of producing a desired result or the ability to produce desired output, giving an intended or expected outcome, or produce a deep, vivid impression
en-GB/ɪˈfɛktɪvnəs/
en-US/ˈifɛktɪvnəs/
capability of producing a desired result or the ability to produce desired output, giving an intended or expected outcome, or produce a deep, vivid impression