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effectiveness

noun

Definition of effectivenessnext
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 show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Recent Examples of effectiveness Now the technique has become mainstream as attackers reap its simplicity and effectiveness in infecting users of PCs and Macs alike. — Dan Goodin, ArsTechnica, 11 Sep. 2026 The chaotic, violence-laden sequence is but the first of many in a film that aspires to classic Hollywood action movie status but reduces its effectiveness through overkill of both the literal and figurative kind. — Frank Scheck, HollywoodReporter, 10 Sep. 2026 Gaspafotos/Getty Images His team selection against Forest suggests the head coach is cognizant of Tottenham’s declining effectiveness as a set-piece animal. — Elias Burke, New York Times, 9 Sep. 2026 This is why revenue per visitor captures total website monetization effectiveness better than conversion rate or average order value on their own. — Bar Maimon, Forbes.com, 9 Sep. 2026 Without those outcomes, the figures reveal the scale of Oeko-Tex’s oversight more clearly than its effectiveness. — Alexandra Harrell, Footwear News, 9 Sep. 2026 The overall effectiveness of third-party turnaround organizations has been highly disputed across the country. — Samuel O’Neal 8, Fort Worth Star-Telegram, 8 Sep. 2026 These dollars, the report said, do not account for the long-term investment required to maintain the system’s effectiveness. — Lizzie Kane, Sacbee.com, 8 Sep. 2026 Critics have questioned the overall legality of the boat strikes as well as their effectiveness. — ABC News, 7 Sep. 2026
Recent Examples of Synonyms for effectiveness
  1. conclusiveness
  2. efficacy
  3. impact
  4. validity
  5. importance
  6. strength
  7. significance
  8. authority
Noun
  • On Friday morning, Burke’s defense team tried to sow doubt about the conclusiveness of the autopsy conducted in the case.
    — Richard Winton, Los Angeles Times, 24 July 2026
  • But his dictionary, with its conclusiveness, was a huge publishing success.
    — Louis Menand, New Yorker, 22 Dec. 2025
Definition of conclusiveness
Noun
  • Lack of self-efficacy Lahey explains that kids who never have to deal with the consequences of their actions end up feeling a lack of self-efficacy.
    — Cheryl Maguire, Parents, 1 Sep. 2026
  • The need-to-know this morning Alumis said its experimental treatment for lupus failed to achieve the efficacy goals of a mid-stage clinical trial.
    — Helen Branswell, STAT, 1 Sep. 2026
Definition of efficacy
Noun
  • Republicans and Democrats alike have faced anger from voters anxious about the impact a data center built in their community will have on utility bills, property values, and quality of life.
    — Lauren Green, The Washington Examiner, 12 Sep. 2026
  • The cat sanctuary made it through Lowell with limited impact, a relief after Hurricane Lala in August caused thousands of dollars in damage.
    — GENE JOHNSON, Arkansas Online, 12 Sep. 2026
Definition of impact
Noun
  • The owner of the files caught Krebs’ attention after showing the journalist a scan of his Virginia drivers license, strongly supporting the leak’s validity.
    — Victor Tangermann, Futurism, 3 Sep. 2026
  • The report suggests considering inventory exposure, material-supply risk, and residual value, then developing responses with both economic and ecological validity.
    — Cleo Levin, Footwear News, 2 Sep. 2026
Definition of validity
Noun
  • With so many of the buildings downtown with any kind of historic architectural significance already under landmark protections, Berman has shifted his focus to preserving properties with some kind of social importance.
    — David Freedlander, Curbed, 11 Sep. 2026
  • Ayari’s importance to Hurzeler is undiminished so far this season.
    — Andy Naylor, New York Times, 11 Sep. 2026
Definition of importance
Noun
  • Trump claimed the payments would be possible because of the economy's strength, yet consumer sentiment is weak as gasoline prices are increasing because of the war with Iran and wages are struggling to keep pace with inflation.
    — BILL BARROW, Arkansas Online, 11 Sep. 2026
  • Cunha’s strength has been in replicating some of the things that helped Murillo build his reputation in England.
    — Paul Taylor, New York Times, 11 Sep. 2026
Definition of strength
Noun
  • Even more important, however, is the symbolic significance of Hall agreeing to a contract extension.
    — Chris Waugh, New York Times, 11 Sep. 2026
  • With so many of the buildings downtown with any kind of historic architectural significance already under landmark protections, Berman has shifted his focus to preserving properties with some kind of social importance.
    — David Freedlander, Curbed, 11 Sep. 2026
Definition of significance
Noun
  • Erik Menendez and his brother, Lyle, serving life terms for the 1989 fatal shootings of their parents in the family's Beverly Hills mansion, had their parole hearing moved up 17 months, although authorities didn't say why.
    — Arkansas Online, Arkansas Online, 10 Sep. 2026
  • Resistance to authority and calls for improvement were inevitable, whether the problem was officiating or travel and safety.
    — Jerry Brewer, New York Times, 9 Sep. 2026
Definition of authority

Browse Nearby Words

effectively
effectiveness
effects
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Cite this Entry

“Effectiveness.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/effectiveness. Accessed 15 Sep. 2026.

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