| effectiveness | | |
| n. (attribute) | 1. effectiveness, effectivity, effectuality, effectualness | power to be effective; the quality of being able to bring about an effect. |
| ~ power, powerfulness | possession of controlling influence.; "the deterrent power of nuclear weapons"; "the power of his love saved her"; "his powerfulness was concealed by a gentle facade" |
| ~ incisiveness, trenchancy | keenness and forcefulness of thought or expression or intellect. |
| ~ efficaciousness, efficacy | capacity or power to produce a desired effect.; "concern about the safety and efficacy of the vaccine" |
| n. (attribute) | 2. effectiveness, potency, strength | capacity to produce strong physiological or chemical effects.; "the toxin's potency"; "the strength of the drinks" |
| ~ power, powerfulness | possession of controlling influence.; "the deterrent power of nuclear weapons"; "the power of his love saved her"; "his powerfulness was concealed by a gentle facade" |
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