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
Examples are automatically compiled from online sources to
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Recent Examples of effectiveness
Mathematically, if quality is seven and acceptance is four, effectiveness is 28.
—
Thomas Lim,
Forbes.com,
2 July 2026
For Tokyo, that complicates the effectiveness of any unilateral intervention.
—
Lee Ying Shan,
CNBC,
1 July 2026
Most peptides have not been studied outside of animals, meaning there’s little data to demonstrate their safety or effectiveness in humans.
—
Aria Bendix,
NBC news,
30 June 2026
Why the Royal Navy is changing course Recent conflicts have highlighted the growing effectiveness of relatively inexpensive drones against much larger and more costly warships.
—
Kaif Shaikh,
Interesting Engineering,
30 June 2026
In addition to its effectiveness, the supplements are USP Verified, meaning they have been independently tested for quality, purity, and potency.
—
Taylor Lane,
Flow Space,
30 June 2026
However, the study found that hourly breaks offered the best balance between feasibility and effectiveness.
—
Allison Forsyth,
Health,
30 June 2026
But other studies have shown that giving the vaccines at the same time does not meaningfully reduce the effectiveness of either, and potentially increases uptake.
—
Theresa Gaffney,
STAT,
30 June 2026
Thomas Lim,
Forbes.com,
2 July 2026
For Tokyo, that complicates the effectiveness of any unilateral intervention.
—
Lee Ying Shan,
CNBC,
1 July 2026
Most peptides have not been studied outside of animals, meaning there’s little data to demonstrate their safety or effectiveness in humans.
—
Aria Bendix,
NBC news,
30 June 2026
Why the Royal Navy is changing course Recent conflicts have highlighted the growing effectiveness of relatively inexpensive drones against much larger and more costly warships.
—
Kaif Shaikh,
Interesting Engineering,
30 June 2026
In addition to its effectiveness, the supplements are USP Verified, meaning they have been independently tested for quality, purity, and potency.
—
Taylor Lane,
Flow Space,
30 June 2026
However, the study found that hourly breaks offered the best balance between feasibility and effectiveness.
—
Allison Forsyth,
Health,
30 June 2026
But other studies have shown that giving the vaccines at the same time does not meaningfully reduce the effectiveness of either, and potentially increases uptake.
—
Theresa Gaffney,
STAT,
30 June 2026
Recent Examples of Synonyms for effectiveness
Noun
-
But his dictionary, with its conclusiveness, was a huge publishing success.
Noun
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But the efficacy of that killswitch is unclear.
-
From there the compound would need to clear safety and efficacy testing in clinical trials before it could ever be used with patients.
Noun
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In another recent study on the impact of AI on jobs, the California AI-unemployment tracker examined the state across industries, education levels and region and highlighted some worrying trends.
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Alexandra Koch is a Fox News Digital Editor, with a focus on high-impact events that shape national conversation.
Noun
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Universities are built to think carefully about consequences, to weigh ethics, validity, unintended effects and long-term implications.
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Maybe there's validity to the idea that every loss doesn't need to be a lesson.
Noun
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There is no public address system reminding some fans the importance of a looming third down.
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The importance of falling well has only grown as players have adapted movement patterns from clay and hard courts to grass.
Noun
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Additional laser pulses reveal how much the ion’s quantum state has changed, allowing researchers to calculate the strength of the surrounding electric field.
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The link held even after accounting for traditional risk factors, though the strength varied by racial and ethnic group, a gap researchers say still needs further study before firm conclusions can be drawn about why.
Noun
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Bryan West Madison Square Garden does hold personal significance for Swift.
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Second lady Usha Vance mocking The New York Times for reading political significance into her Old Navy maternity dress and the New York Knicks celebrating their NBA title were featured in last week's News Quiz.
Noun
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Deputies served the warrant on Adrian Cruz and collected evidence that led to Cruz’s arrest on felony animal cruelty charges, authorities said.
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In an early instance of what authorities believe to have been an extortion attempt, federal prosecutors charged a California man with sending a fake ransom note via text message to Savannah Guthrie's family.
Cite this Entry
“Effectiveness.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/effectiveness. Accessed 5 Jul. 2026.
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