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
-
There’s value in the ethos, and the Hurricanes’ status — one win from the Stanley Cup Final, one win from scaling the hill that comes before the mountain — is proof of its efficacy.—
Sean Gentille,
New York Times,
28 May 2026
-
Feigenbaum said that people using these drugs in spite of their limited efficacy and unknown risks are made up of two populations.—
T.M. Brown,
CNN Money,
28 May 2026
Noun
-
And yet, each is playing with desperation to make an impact — and garner more playing time — that has jolted the Red Sox to life.—
Jen McCaffrey,
New York Times,
28 May 2026
-
Even visitors with little interest in architecture can understand the impact immediately.—
David Nikel,
Forbes.com,
27 May 2026
Noun
-
The Supreme Court spent much of the January oral arguments grappling with the biological advantage men tend to have over women in sports, and whether there is validity to claims that a man’s biological advantage can be suppressed by hormone drugs.—
Jack Birle,
The Washington Examiner,
27 May 2026
-
The one person Fraser never had to convince about the validity of her turnaround was herself.—
Claire Zillman,
Fortune,
27 May 2026
Noun
-
Her importance has been magnified by the absence of junior defender Presley Kannaka, who suffered a season-ending knee injury in the third game.—
Patrick Z. McGavin,
Chicago Tribune,
27 May 2026
-
During the panel, speakers noted the importance of establishing relationships with creators and social listening, which together enable brands to react to trending online conversations quickly and authentically.—
Fairchild Studio,
Footwear News,
27 May 2026
Noun
-
Clark is finally at full strength again after, hampered by a groin injury, played in only 13 games a year ago.—
Joseph Dycus,
Mercury News,
29 May 2026
-
Smith, who had been the strength coach at American Heritage, was promoted to head coach of the football program.—
Bruce Feldman,
New York Times,
28 May 2026
Noun
-
The strikes have also targeted regions with biblical significance, threatening historical and archaeological sites.—
Alayna Treene,
CNN Money,
30 May 2026
-
The president has pressured the Fed to cut rates, while Warsh has recently downplayed the significance and accuracy of the PCE gauge.—
D. Brian Blank,
Fortune,
30 May 2026
Noun
-
According to authorities, a group of individuals attempted to storm a police station in the French capital late Saturday.—
Michael Sinkewicz,
FOXNews.com,
31 May 2026
-
New Hampshire authorities are asking for the public’s help in solving a four-decade long murder mystery.—
Flint McColgan,
Boston Herald,
31 May 2026
Cite this Entry
“Effectiveness.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/effectiveness. Accessed 2 Jun. 2026.
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