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
Only 30% of the studies, or 23/77, even attempted to test for mask effectiveness.
—
Ian Miller Outkick, FOXNews.com, 1 June 2026
This in turn depends on their preferences for what is and is not covered based on many different factors, including products’ clinical- and cost-effectiveness, budgetary impact and other considerations.
—Joshua P. Cohen, Forbes.com, 1 June 2026
Then, a year after her cameo in Kendrick Lamar’s halftime show at Super Bowl LIX, during Super Bowl LX, Williams appeared in a commercial for telehealth company Ro, advertising the effectiveness of the weight-loss drugs.
—Charlie Eccleshare, New York Times, 1 June 2026
Reducing onboard noise, therefore, improves the effectiveness of the vessel’s surveillance equipment and enhances operating conditions for the crew.
—Kaif Shaikh, Interesting Engineering, 1 June 2026
Despite those actions, the Center for Effective Lawmaking, a joint project from Vanderbilt University and the University of Virginia that analyzes items moving through Congress, ranked DeGette as below average in effectiveness in eight of 14 terms analyzed.
—Elliott Wenzler, Denver Post, 31 May 2026
Daraxonrasib’s effectiveness appears to expand beyond targeting the mutation.
—Erika Edwards, NBC news, 31 May 2026
Now, access to those therapies is closer than ever to being expanded more broadly, bringing new options for patients and opportunities for companies — but also new scrutiny about safety and effectiveness.
—Brandon Gomez, CNBC, 31 May 2026
Remove any of those elements and the effectiveness drops sharply.
—Katrine L. Wallace, The Conversation, 29 May 2026
Ian Miller Outkick, FOXNews.com, 1 June 2026
This in turn depends on their preferences for what is and is not covered based on many different factors, including products’ clinical- and cost-effectiveness, budgetary impact and other considerations.
—Joshua P. Cohen, Forbes.com, 1 June 2026
Then, a year after her cameo in Kendrick Lamar’s halftime show at Super Bowl LIX, during Super Bowl LX, Williams appeared in a commercial for telehealth company Ro, advertising the effectiveness of the weight-loss drugs.
—Charlie Eccleshare, New York Times, 1 June 2026
Reducing onboard noise, therefore, improves the effectiveness of the vessel’s surveillance equipment and enhances operating conditions for the crew.
—Kaif Shaikh, Interesting Engineering, 1 June 2026
Despite those actions, the Center for Effective Lawmaking, a joint project from Vanderbilt University and the University of Virginia that analyzes items moving through Congress, ranked DeGette as below average in effectiveness in eight of 14 terms analyzed.
—Elliott Wenzler, Denver Post, 31 May 2026
Daraxonrasib’s effectiveness appears to expand beyond targeting the mutation.
—Erika Edwards, NBC news, 31 May 2026
Now, access to those therapies is closer than ever to being expanded more broadly, bringing new options for patients and opportunities for companies — but also new scrutiny about safety and effectiveness.
—Brandon Gomez, CNBC, 31 May 2026
Remove any of those elements and the effectiveness drops sharply.
—Katrine L. Wallace, The Conversation, 29 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
-
According to the Centers for Disease Control and Prevention (CDC), some studies report that certain essential oils, like peppermint oil and rosemary oil, have some efficacy for tick control.—
Dan Simms,
USA Today,
4 June 2026
-
Oncologists want to know if that broad activity leads to broad efficacy.—
Lisa Jarvis,
Mercury News,
4 June 2026
Noun
-
There have been ongoing concerns about its impact on gentrification on the South Side, and the location itself was in dispute as well.—
Jacqui Palumbo,
CNN Money,
4 June 2026
-
Wembanyama, one of the marquee stars of this series, was his usual disruptive presence in the paint defensively but struggled to make a larger impact elsewhere.—
Alejandro Avila,
FOXNews.com,
4 June 2026
Noun
-
Under the resolution, initiatives attributed to Ramallah to create a parallel land registry in Area C were declared to have no legal validity or standing.—
Amelie Botbol,
FOXNews.com,
3 June 2026
-
Lindell is a longtime Trump ally who has also boosted false conspiracies about the validity of the 2020 election results.—
Natalie Neysa Alund,
USA Today,
1 June 2026
Noun
-
Charlotte Mather-Taylor, the director of the Area Agency on Aging of Broward County, echoed the sentiment on the importance of mental activity.—
Lauren Pastrana,
CBS News,
4 June 2026
-
Finally, in the Oaxacan field test, the team showed that predatory wasps use the airborne distress signals to find their prey, but the relative importance of direct leaf defenses versus this indirect wasp recruitment isn’t clear.—
Jacek Krywko,
ArsTechnica,
3 June 2026
Noun
-
At the same time, a 12-month clinical trial out of Penn State just confirmed that eating prunes daily can help preserve bone strength in postmenopausal women.—
Allison Palmer,
Kansas City Star,
4 June 2026
-
But strength and resilience aren't just themes in her magazine.—
Mikayla Price,
CBS News,
4 June 2026
Noun
-
So using these as natural barriers obviously has an enormous significance — enormous importance.—
Gabrielle Emanuel,
NPR,
6 June 2026
-
For now, however, his focus is on preparing himself and his teammates for the country’s first FIFA World Cup match since Haiti played in 1974, and Miami carries a special significance along that goal.—
Jacqueline Charles,
Miami Herald,
6 June 2026
Noun
-
On May 17, at least three people were killed in the Moscow region after Ukraine targeted Russia with more than 500 drones, according to Russian authorities.—
Zahra Ullah,
CNN Money,
7 June 2026
-
As of late Saturday night, authorities have not released descriptions of any suspects or identified a possible motive.—
Michael Sinkewicz,
FOXNews.com,
7 June 2026
Cite this Entry
“Effectiveness.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/effectiveness. Accessed 9 Jun. 2026.
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