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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 If medications aren't effective, other options may include Botox injections into the bladder wall or nerve stimulation therapy. Lindsay Curtis, Health, 25 Oct. 2025 The human body holds several effective hiding spots that some of the world's nastiest viruses have discovered - like the eyes and the testes - that are beyond the reach of the immune system. NPR, 24 Oct. 2025 The Mavericks faced some significant public criticism over this decision, with many arguing Flagg would be more effective as an off-ball slasher. Matt Audilet, MSNBC Newsweek, 24 Oct. 2025 The sleeps are short but effective. Rowan Jacobsen, Harpers Magazine, 24 Oct. 2025 See All Example Sentences for effective
Recent Examples of Synonyms for effective
Adjective
  • Chief Deputy Greg Tabor said the smaller size of the pods allows for more efficient operation of the entire Detention Center space and help mitigate overcrowding.
    Arkansas Online, Arkansas Online, 3 Nov. 2025
  • Proponents of the shake method swear that shaking out your laundry will prevent tangling, make drying more efficient, and reduce wrinkles in the process.
    Brandee Gruener, Southern Living, 3 Nov. 2025
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
  • The actual culling is reserved for licensed hunters and local hunting associations, some of whom do it recreationally or as a part-time job.
    Jessie Yeung, CNN Money, 7 Nov. 2025
  • Of course, the actual plot of Daisy Jones & the Six bears only a passing resemblance to the Fleetwood Mac story.
    Literary Hub, Literary Hub, 6 Nov. 2025
Adjective
  • The Broncos, meanwhile, are riding one of the least convincing six-game winning streaks in recent memory.
    Mike Sando, New York Times, 3 Nov. 2025
  • In reality, bringing the real-life husband and wife together on screen required some convincing.
    Andrew Ravens‎, MSNBC Newsweek, 31 Oct. 2025
Adjective
  • This was a golden age for these guys, ten years before Giuliani and any kind of real government crackdown, and a few years after Coppola’s Godfather.
    Literary Hub, Literary Hub, 6 Nov. 2025
  • The situation for Ridge Holland, who also uses his real name Luke Menzies, has reportedly worsened.
    Andrew Ravens‎, MSNBC Newsweek, 6 Nov. 2025
Adjective
  • Researchers further explain that the discovery of microscopic deformation features in quartz provides conclusive proof that the Jinlin crater was formed by an asteroid impact.
    Bojan Stojkovski, Interesting Engineering, 25 Oct. 2025
  • Advertisement What the NFL changed to reduce injuries In recent years, as research about CTE has become more conclusive, some sports leagues have begun to concede that head impacts are a problem.
    Alana Semuels, Time, 20 Oct. 2025
Adjective
  • Headquartered in London, Longwave will focus on factual content for the global TV market across all unscripted genres – from investigative series, factual entertainment formats through to human interest stories.
    Jesse Whittock, Deadline, 5 Nov. 2025
  • This factual omission extended as well to his professional life.
    Literary Hub, Literary Hub, 4 Nov. 2025
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 8 Nov. 2025.

More from Merriam-Webster on effective

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