effectiveness
- 1The quality of working well and getting the results you want.
Like a key that opens the lock the first time you try it.
The effectiveness of the new medicine surprised the doctors.
We tested the cleaner's effectiveness on several kinds of stains.
Similarefficacy, success, usefulness, efficiency
Oppositeineffectiveness, uselessness, futility
- 2How well something works and reaches its goal.
Like a score on a test: it shows how much something worked.
Doctors rate the drug's effectiveness on a simple scale.
The new tires increased the car's braking effectiveness in the rain.
Similarefficacy, success, performance
- 3The power something has to get results, even before it is used.
The team believed in the tool's effectiveness from the very start.
Constant fighting among its members hurt the group's effectiveness.
Similarefficacy, potency, power, capability
Oppositeineffectiveness
Practice
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Origin
It comes from the word "effective" plus the ending "-ness."