1
as in conclusiveness
the capacity to persuade
the "guilty" verdict was all the proof needed of the effectiveness of the prosecutor's closing argument
Synonyms & Similar Words
Relevance
Antonyms & Near Antonyms
2
as in efficacy
the power to produce a desired result
the huge upsurge in sales pretty much demonstrated the effectiveness of the new ad campaign
Synonyms & Similar Words
Antonyms & Near Antonyms
3
as in impact
the quality of an utterance that provokes interest and produces an effect
your writing lacks effectiveness because practically every sentence is in the passive voice
Synonyms & Similar Words
Example Sentences
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Recent Examples of effectiveness
However, the study didn’t compare gadusol’s effectiveness to currently available sunscreens.
—
Devika Rao, TheWeek, 18 May 2026
Instead, the court ruled that the effectiveness of Missouri’s map was in the hands of Hoskins, the secretary of state, who has the power to decide whether to certify the referendum for the ballot.
—Kacen Bayless, Kansas City Star, 18 May 2026
Measure leadership by what happens without you The second shift is in how leadership effectiveness gets evaluated.
—Rhett Power, Forbes.com, 17 May 2026
Høeg has acknowledged the effectiveness of some vaccines, including the measles vaccine.
—Michael Kaplan, CBS News, 16 May 2026
While its effectiveness has been panned by many, including coaches, former coaches, the NFL Players Association and football fans, the rule remains in force today.
—Andrea Hsu, NPR, 15 May 2026
Those trials examined the effectiveness of different types of protein (whey, milk, casein, collagen, meat, soy, rice, oat, and dietary protein) in combination with and separate from physical exercise (resistance training, aerobic exercise, and multicomponent training).
—Malissa Rodenburg, Health, 15 May 2026
Dietary supplements are subject to less strict regulation, which can make quality and effectiveness inconsistent between products.
—Ryan Brennan, Sacbee.com, 15 May 2026
Issues under consideration include the visibility and prominence of European works, fairness in the advertising market, and the effectiveness of rules protecting minors from harmful content on video-sharing platforms.
—Nick Vivarelli, Variety, 15 May 2026
Devika Rao, TheWeek, 18 May 2026
Instead, the court ruled that the effectiveness of Missouri’s map was in the hands of Hoskins, the secretary of state, who has the power to decide whether to certify the referendum for the ballot.
—Kacen Bayless, Kansas City Star, 18 May 2026
Measure leadership by what happens without you The second shift is in how leadership effectiveness gets evaluated.
—Rhett Power, Forbes.com, 17 May 2026
Høeg has acknowledged the effectiveness of some vaccines, including the measles vaccine.
—Michael Kaplan, CBS News, 16 May 2026
While its effectiveness has been panned by many, including coaches, former coaches, the NFL Players Association and football fans, the rule remains in force today.
—Andrea Hsu, NPR, 15 May 2026
Those trials examined the effectiveness of different types of protein (whey, milk, casein, collagen, meat, soy, rice, oat, and dietary protein) in combination with and separate from physical exercise (resistance training, aerobic exercise, and multicomponent training).
—Malissa Rodenburg, Health, 15 May 2026
Dietary supplements are subject to less strict regulation, which can make quality and effectiveness inconsistent between products.
—Ryan Brennan, Sacbee.com, 15 May 2026
Issues under consideration include the visibility and prominence of European works, fairness in the advertising market, and the effectiveness of rules protecting minors from harmful content on video-sharing platforms.
—Nick Vivarelli, Variety, 15 May 2026
Recent Examples of Synonyms for effectiveness
Noun
-
But his dictionary, with its conclusiveness, was a huge publishing success.—
Louis Menand,
New Yorker,
22 Dec. 2025
Noun
-
For that reason, the study failed to achieve its primary efficacy goal, which was a dose response.—
Adam Feuerstein,
STAT,
14 May 2026
-
Novo has said that the similar efficacy of more than 20% between high-dose Wegovy and Zepbound could help the company win back market share from Lilly.—
Annika Kim Constantino,
CNBC,
12 May 2026
Noun
-
Garnacho has had far more opportunities and failed to make an impact.—
Cerys Jones,
New York Times,
21 May 2026
-
As part of the hotel’s social-impact aims, the rattan icebox and garbage bins were crafted by Burmese artisans who work with Kalinko, a social enterprise that creates handmade, sustainable products using traditional techniques.—
Condé Nast,
Condé Nast Traveler,
20 May 2026
Noun
-
Always verify the validity of requests before sharing personal information.—
Metro Creative Services,
Boston Herald,
18 May 2026
-
Record your calls and check the validity of the number as well.—
Gene Marks,
Forbes.com,
18 May 2026
Noun
-
This is not an area where Chelsea can afford too many exits without high-quality replacements, particularly given the importance of attacking full-backs in Alonso’s football.—
Cerys Jones,
New York Times,
21 May 2026
-
This year, brands are turning out an abundance of newness as consumers still emphatically embrace the heritage bottom and sustainability continues to grow in importance.—
Catherine Salfino,
Footwear News,
20 May 2026
Noun
-
The bird has long symbolized American values like strength, freedom and independence, said Kochersperger.—
Sarah Raza,
Chicago Tribune,
15 May 2026
-
American oak trees symbolize the enduring strength and resilience of our people and nation.—
Joseph Bonasia,
The Orlando Sentinel,
15 May 2026
Noun
-
For travelers interested in surrounding themselves with AC nostalgia, Resorts Casino Hotel holds significance as the first legal casino hotel outside Nevada, having opened in the 1970s.—
Jessica Chapel,
Condé Nast Traveler,
23 May 2026
-
Similar to birth stones and flowers, each month’s herbs hold a special significance—as well as practical benefits.—
Shagun Khare,
Martha Stewart,
23 May 2026
Noun
-
Anti-corruption protests forced then-Prime Minister Milos Vucevic to resign in January 2025 before authorities cracked down on the protesters.—
Jovana Gec,
Los Angeles Times,
24 May 2026
-
Also, only Congress has the authority to authorize spending and independent agencies were set up to be out of the reach of the executive branch, but neither check is being respected.—
Letters to the Editor,
The Orlando Sentinel,
24 May 2026
Cite this Entry
“Effectiveness.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/effectiveness. Accessed 26 May. 2026.
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