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
Mixing grapefruit, whether as a juice or in a dietary supplement, with some medications can disrupt how the drugs are processed in your body, potentially causing dangerous side effects or loss of effectiveness.
—
Ross Phan, Verywell Health, 9 Feb. 2026
Psyduck, one of the main Pokémon used by Misty in the series, was a water-type who could use powerful psychic moves, but the timing and effectiveness of its abilities was disrupted by its constant headaches.
—Jordan Moreau, Variety, 9 Feb. 2026
It was widely presumed as a matter of faith that a model’s effectiveness was proportional to its mystery.
—Gideon Lewis-Kraus, New Yorker, 9 Feb. 2026
The effectiveness of the attack was made evident by the response from OpenAI’s Altman.
—Nick Lichtenberg, Fortune, 9 Feb. 2026
The Patriots didn’t throw the ball very much, and the snow likely affected the effectiveness of both teams’ edge rushers.
—Doug Kyed, Boston Herald, 8 Feb. 2026
While platinum is the standard catalyst material due to its effectiveness and chemical stability, its rarity creates a financial barrier to mass production.
—Aman Tripathi, Interesting Engineering, 8 Feb. 2026
The ingredients can start to separate and lose their effectiveness.
—Tessa Cooper, The Spruce, 7 Feb. 2026
Local officials referenced the amount of snow that fell when asked about the effectiveness of their pretreatment strategies.
—Julia James, Dallas Morning News, 6 Feb. 2026
Ross Phan, Verywell Health, 9 Feb. 2026
Psyduck, one of the main Pokémon used by Misty in the series, was a water-type who could use powerful psychic moves, but the timing and effectiveness of its abilities was disrupted by its constant headaches.
—Jordan Moreau, Variety, 9 Feb. 2026
It was widely presumed as a matter of faith that a model’s effectiveness was proportional to its mystery.
—Gideon Lewis-Kraus, New Yorker, 9 Feb. 2026
The effectiveness of the attack was made evident by the response from OpenAI’s Altman.
—Nick Lichtenberg, Fortune, 9 Feb. 2026
The Patriots didn’t throw the ball very much, and the snow likely affected the effectiveness of both teams’ edge rushers.
—Doug Kyed, Boston Herald, 8 Feb. 2026
While platinum is the standard catalyst material due to its effectiveness and chemical stability, its rarity creates a financial barrier to mass production.
—Aman Tripathi, Interesting Engineering, 8 Feb. 2026
The ingredients can start to separate and lose their effectiveness.
—Tessa Cooper, The Spruce, 7 Feb. 2026
Local officials referenced the amount of snow that fell when asked about the effectiveness of their pretreatment strategies.
—Julia James, Dallas Morning News, 6 Feb. 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 still considerable doubt over the efficacy of AI agents in the workplace.—
Frank Landymore,
Futurism,
5 Feb. 2026
-
While early-stage trials are not designed to prove efficacy, the data could help validate epigenetic reprogramming as a viable strategy for neurodegenerative eye disease.—
Neetika Walter,
Interesting Engineering,
4 Feb. 2026
Noun
-
El Paso is home to one of the largest cargo facilities near the border, so these restrictions could have a significant impact on shipments as well.—
Ayesha Ali,
ABC News,
11 Feb. 2026
-
Retail bankruptcies have had a major impact on malls and their landlords who must seek out new tenants to fill sites being vacated, and/or devise redevelopment plans.—
David Moin,
Footwear News,
11 Feb. 2026
Noun
-
Meanwhile, Whaleco Technology has disputed the validity of the interim agreement’s termination notice.—
Jasmin Malik Chua,
Sourcing Journal,
10 Feb. 2026
-
Insurers are indeed responsible for assessing the validity of medical claims and paying for them.—
Chris Pope,
Washington Post,
10 Feb. 2026
Noun
-
Van Der Beek spoke with USA TODAY in August 2025 about the importance of catching it early.—
Alyssa Goldberg,
USA Today,
12 Feb. 2026
-
The collaboration between Fincantieri and Generative Bionics also holds strategic importance in strengthening European technological sovereignty by drawing on expertise developed across research institutions and the advanced industrial supply chain.—
Atharva Gosavi,
Interesting Engineering,
12 Feb. 2026
Noun
-
Your body needs vitamin D to absorb calcium and maintain bone strength.—
Zia Sherrell,
Health,
5 Feb. 2026
-
There is strength in coming together to pray, Gomez said.—
Anissa Rivera,
Daily News,
5 Feb. 2026
Noun
-
As a true soccer fan, the mayor understands the significance of this moment.—
John Calvelli,
New York Daily News,
7 Feb. 2026
-
The Factbook also supplied superlatives that trivia buffs could count on, issuing Daily Facts of historical and geographical significance.—
Bill Chappell,
NPR,
7 Feb. 2026
Noun
-
Five days later, she was found alive – and authorities arrested a local suspect who was familiar with the family and her grandson’s construction company, abducting her to get $3 million ransom.—
Chris Kenning,
USA Today,
8 Feb. 2026
-
Meanwhile, authorities have yet to restore full access to the social media platform X, which Maduro blocked after its billionaire owner, Elon Musk, accused him of stealing the 2024 vote.—
EGINA GARCIA CANO,
Arkansas Online,
8 Feb. 2026
Cite this Entry
“Effectiveness.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/effectiveness. Accessed 14 Feb. 2026.
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