effectiveness
Americannoun
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the quality of producing an intended or desired result.
For maximum effectiveness of your weight loss plan, you need to combine exercise with a healthy diet.
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the quality of producing a deep or vivid impression.
We were struck by the evident appeal and effectiveness of these short, dramatic, upbeat video stories.
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a measure of the success of a vaccine or other pharmaceutical when used in the real world, as opposed to the controlled environment of a clinical trial.
Other Word Forms
Derived Forms
Etymology
Origin of effectiveness
First recorded in 1600–10; effective ( def. ) + -ness ( def. )
Vocabulary lists containing effectiveness
Reading: Informational - Middle School
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Media Literacy - High School
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Media Literacy - Middle School
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Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
Effectiveness varies according to the characteristics of the water and the types of contaminants.
From Salon • Oct. 3, 2024
"Effectiveness of Antidepressants in Combination with Psychotherapy" was published online in The Journal of Mental Health Policy and Economics in March 2024.
From Science Daily • May 30, 2024
Effectiveness against infection may start declining within a few months, so people at high risk for severe outcomes might need boosters more often.
From Washington Post • Feb. 7, 2023
Effectiveness fell to 37% against BA.5 and 43% against XBB/XBB.1.5 among those aged 65 years and older.
From Reuters • Jan. 25, 2023
Lack of Political Effectiveness Farmers usually do their duty serving on juries and in minor civil offices.
From The Challenge of the Country A Study of Country Life Opportunity by Fiske, George Walter
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
