Definition of effectivenext
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Synonym Chooser

How does the adjective effective contrast with its synonyms?

Some common synonyms of effective are effectual, efficacious, and efficient. While all these words mean "producing or capable of producing a result," effective stresses the actual production of or the power to produce an effect.

an effective rebuttal

When can effectual be used instead of effective?

The words effectual and effective can be used in similar contexts, but effectual suggests the accomplishment of a desired result especially as viewed after the fact.

the measures to stop the pilfering proved effectual

When could efficacious be used to replace effective?

The words efficacious and effective are synonyms, but do differ in nuance. Specifically, efficacious suggests possession of a special quality or virtue that gives effective power.

a detergent that is efficacious in removing grease

Where would efficient be a reasonable alternative to effective?

While in some cases nearly identical to effective, efficient suggests an acting or a potential for action or use in such a way as to avoid loss or waste of energy in effecting, producing, or functioning.

an efficient small car

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 effective Eli Lilly is similarly developing a new injectable GLP-1, retatrutide, that appears to be even more effective than the current drugs on the market—and which the company confirmed is not currently included in its agreement with the White House. Nicholas Florko, The Atlantic, 7 Nov. 2025 An Ohio native known for his effective sinker, Stammen is fifth in Padres history with 333 appearances for the club. Ryan Canfield, FOXNews.com, 7 Nov. 2025 The men had not had effective representation, the justices ruled. Lorenzino Estrada, AZCentral.com, 7 Nov. 2025 To prevent the virus, the health department said the Measles-Mumps-Rubella vaccine can be an effective measure. Craig Shoup, Nashville Tennessean, 7 Nov. 2025 See All Example Sentences for effective
Recent Examples of Synonyms for effective
Adjective
  • Young was remarkably efficient, throwing three TD passes of 30-plus yards and going 15-for-20 for 206 yards.
    Scott Fowler, Charlotte Observer, 7 Jan. 2026
  • The problem is Herro provided the bench’s only efficient production against the Timberwolves.
    Anthony Chiang, Miami Herald, 7 Jan. 2026
Adjective
  • Department stores still have to make a compelling case for consumers to come back.
    Phil Wahba, Fortune, 7 Nov. 2025
  • North Carolina is renowned for its music, creativity, and breathtaking mountain views, but its large-scale artworks offer another compelling reason to visit the state.
    Jennifer Prince, Southern Living, 7 Nov. 2025
Adjective
  • Carote 16-Piece Nonstick Cookware Set The right nonstick cookware can be an actual kitchen game changer—and Carote’s 16-piece set delivers on that promise.
    Mariana Best, Better Homes & Gardens, 10 Jan. 2026
  • Everything was really incorrect for the period—shiny, sparkly, overdone—but the actual shapes and silhouettes of his clothes are quite accurate.
    Radhika Seth, Vogue, 10 Jan. 2026
Adjective
  • The Gators found their offensive flow and applied the defensive clamps against the high-scoring Bulldogs during a convincing and pivotal 92-77 win Tuesday night at the O’Connell Center.
    Edgar Thompson, The Orlando Sentinel, 7 Jan. 2026
  • After pulling away in the second half, Old Rochester continued building league momentum with a convincing 54-32 victory.
    Zach McMahon, Boston Herald, 7 Jan. 2026
Adjective
  • The defense bent a lot and didn’t break often but didn’t have any real signature plays.
    Jordan McPherson, Miami Herald, 9 Jan. 2026
  • While some calas are accessible by car, others can only be reached by a short hike—that’s where visitors will find the real magic and privacy.
    Liz Provencher, Travel + Leisure, 9 Jan. 2026
Adjective
  • Though home blood pressure monitors are effective, a healthcare provider can provide more accurate and conclusive results.
    Mark Gurarie, Verywell Health, 6 Nov. 2025
  • Despite numerous conclusive assessments that the Saudi regime planned and perpetrated Khashoggi’s murder, the high-level officials who ordered his execution have gone unpunished, six years on.
    Scott Griffen, MSNBC Newsweek, 4 Nov. 2025
Adjective
  • But under questioning from Cruz, Vladeck conceded that approving a nondisclosure order without any factual proffer would be inconsistent with a judge’s oath, if that hypothetical were true.
    Kaelan Deese, The Washington Examiner, 8 Jan. 2026
  • The producer is Angie Daniell, the casting director is Jenny Duffy, the factual producer is Louise Kentleton and director of production is Lianne Hickey.
    Lily Ford, HollywoodReporter, 7 Jan. 2026
Adjective
  • Flash flooding currents are strong and can sweep drivers off roadways.
    NC Weather Bot, Charlotte Observer, 8 Nov. 2025
  • But despite strong technical progress, widespread adoption remains challenging due to cost, infrastructure demands, and limited technological maturity.
    Atharva Gosavi, Interesting Engineering, 8 Nov. 2025

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Cite this Entry

“Effective.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/effective. Accessed 10 Jan. 2026.

More from Merriam-Webster on effective

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