Synonym Chooser

How does the adjective efficient contrast with its synonyms?

Some common synonyms of efficient are effective, effectual, and efficacious. While all these words mean "producing or capable of producing a result," 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

In what contexts can effective take the place of efficient?

While in some cases nearly identical to efficient, effective stresses the actual production of or the power to produce an effect.

an effective rebuttal

When would effectual be a good substitute for efficient?

The words effectual and efficient are synonyms, but do differ in nuance. Specifically, effectual suggests the accomplishment of a desired result especially as viewed after the fact.

the measures to stop the pilfering proved effectual

Where would efficacious be a reasonable alternative to efficient?

The synonyms efficacious and efficient are sometimes interchangeable, but efficacious suggests possession of a special quality or virtue that gives effective power.

a detergent that is efficacious in removing grease

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 efficient But the Buckeyes weren’t efficient in the red zone, and that put a lot on Sayin’s shoulders. Cameron Teague Robinson, New York Times, 15 Sep. 2025 To make for a more energy efficient and less nerve-racking exodus experience, once the line grows large enough, pulsing begins, wherein vehicles move in packs rather than lurch along at 5 mph. Denver Nicks, Rolling Stone, 14 Sep. 2025 Instead, utilities are paid to figure out how to profit from building a new power plant, not how to adopt the cheapest, most efficient solution. Brian Deese, Foreign Affairs, 9 Sep. 2025 In the more immediate future, the question is whether organizations are implementing AI in ways that are effective and efficient and that drive improvements for employees and/or customers. Scharon Harding, ArsTechnica, 8 Sep. 2025 See All Example Sentences for efficient
Recent Examples of Synonyms for efficient
Adjective
  • By the summer of 2022, systems like the Bayraktar TB2 became less effective as air defenses increased and commanders began spreading their forces apart.
    Joseph Nepomuceno, The Washington Examiner, 13 Sep. 2025
  • His teammate, quarterback Wyatt Nucci, was equally effective.
    Martin Henderson, Oc Register, 13 Sep. 2025
Adjective
  • The Phillies have discovered a productive unit by cutting their most expensive outfielder’s playing time and rallying around three guys who are probably still platoon players but are making the most of every chance.
    Matt Gelb, New York Times, 11 Sep. 2025
  • As for jobs in programming, a field that’s already faced changes thanks to the new tech, Altman noted that AI tools have made coders far more productive, but the long-term impact is still unclear.
    Jessica Coacci, Fortune, 11 Sep. 2025
Adjective
  • But what really won the people over is the intensely conditioning formula that transforms dry, ragged cuticles with a potent blend of black algae, açai berry, and black caviar extract.
    Sophia Panych, Allure, 16 Sep. 2025
  • That water vapor, a potent greenhouse gas, would have pushed the world into a scorching-hot greenhouse state not long after its birth.
    Quanta Magazine, Quanta Magazine, 15 Sep. 2025

Cite this Entry

“Efficient.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/efficient. Accessed 17 Sep. 2025.

More from Merriam-Webster on efficient

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