Definition of effectivenext
1
2
3

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 However, more research is needed to determine if herbs are an effective treatment. Carrie Madormo, Verywell Health, 24 Apr. 2026 This entry provides an overview of the backlist and frontlist, the importance of effective list building, and the impact of technology on backlists and frontlists. Encyclopedia Britannica, 24 Apr. 2026 Similarly, some research suggests methylone may be effective in treating PTSD, but no phase 3 clinical trials—large studies that confirm that medications work the way they are designed to and are safe—have been completed as of yet. Claire Cameron, Scientific American, 24 Apr. 2026 And to that end, AI companies are motivated to thoroughly profile users so ads become more effective and profitable. Brian Jay Tang, The Conversation, 24 Apr. 2026 See All Example Sentences for effective
Recent Examples of Synonyms for effective
Adjective
  • The latest report shows how the adoption of heat pumps, and a greater share of more fuel-efficient and electric vehicles on the road, continues to drive down greenhouse gas emissions in the residential buildings and transportation sectors, according to officials.
    Stephen Underwood, Hartford Courant, 27 Apr. 2026
  • Chakram’s highly efficient detonation process Unlike conventional rocket engines, which harness deflargration, RDREs leverage the rapid energy release of supersonic detonation waves that rotate around an engine’s circular body.
    Chris Young, Interesting Engineering, 27 Apr. 2026
Adjective
  • Perhaps the most compelling moment of the 2026 NFL Draft came in the final round, when the Pittsburgh Steelers selected running back Eli Heidenreich and the pick was announced to the hometown crowd gathered at the event.
    Armando Salguero OutKick, FOXNews.com, 26 Apr. 2026
  • This one has persisted long enough to stand tall as arguably the most compelling of the 2020s.
    Bennett Durando, Denver Post, 25 Apr. 2026
Adjective
  • But there is a point where the prediction shapes and manipulates the actual outcome.
    Editorial, Boston Herald, 25 Apr. 2026
  • There are actual green onions, peppers, and lots of sausage in there.
    Alex Beggs, Bon Appetit Magazine, 25 Apr. 2026
Adjective
  • Over the course of two semi-final first legs, VAR’s conviction has been less than convincing.
    Phil Hay, New York Times, 30 Apr. 2026
  • But, while Warsh may favor lower rates, there currently isn’t a convincing economic argument for easier monetary policy anytime soon — a view that three key Fed voters telegraphed at this meeting.
    Bryan Mena, CNN Money, 29 Apr. 2026
Adjective
  • And scratched nonstick pans are a real concern for most home cooks.
    Jennifer Zyman, Bon Appetit Magazine, 28 Apr. 2026
  • The milquetoast nature of the statement — with its measured language and nonexistent call to action — and the broader absence of real accountability have nagged at me for weeks.
    Uzma Rentia, STAT, 27 Apr. 2026
Adjective
  • The research is not conclusive on the use of GLP-1 and Alzheimer’s, but some preliminary data is encouraging.
    Cindy Krischer Goodman, Sun Sentinel, 25 Apr. 2026
  • Experts as a whole say more research is needed to give a conclusive answer about benefits and risks.
    Hannah Yasharoff, USA Today, 23 Apr. 2026
Adjective
  • Yet neither approach had any factual basis, and any success either group had was likely due to the placebo effect—merely giving a patient special attention and the hope of a cure can be healing in itself.
    Literary Hub, Literary Hub, 28 Apr. 2026
  • Some complaints derive from the film brushing aside many of the late King of Pop’s controversies, while others criticize the factual problems of Michael’s life and career, including missing family members.
    Allison DeGrushe, StyleCaster, 27 Apr. 2026
Adjective
  • Jessica Chmielewski, Colleen Gartlan and Ella Riordan led a strong defensive effort in front of Noone.
    Steve Millar, Chicago Tribune, 29 Apr. 2026
  • Set one clear boundary today and confirm expectations so your commitments stay strong and manageable.
    Tarot.com, The Orlando Sentinel, 29 Apr. 2026

Browse Nearby Words

Cite this Entry

“Effective.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/effective. Accessed 1 May. 2026.

More from Merriam-Webster on effective

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!

More from Merriam-Webster