effectiveness

Plural: effectivenesses

Noun

• power to be effective; the quality of being able to bring about an effect
• capacity to produce strong physiological or chemical effects
• The property of being effective, of achieving results.
• The capacity or potential for achieving results.
• The degree to which something achieves results.

Examples

• He questioned the effectiveness of the treatment.
• The effectiveness of the drug was well established.

Synonyms

effectivity, effectuality, effectualness, potency, strength

Antonyms

ineffectiveness

Related Words

effect, effective, effectivity, effector, effectual, effectuate, efficacious, efficacity, efficacy, efficiency, efficient