Noun: effectiveness i'fek-tiv-nus
- Power to be effective; the quality of being able to bring about an effect
"The effectiveness of the new policy was evident in the improved test scores";
- effectivity, effectualness, effectuality
- Capacity to produce strong physiological or chemical effects
"the toxin's effectiveness";
- potency, strength
See also: effective, effectual, efficacious, impotent, ineffective, ineffectual, potent, stiff, strong, uneffective
Type of: power, powerfulness
Antonym: ineffectiveness
Encyclopedia: Effectiveness