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Definitions

effective

[ih-fek-tiv, ee-fek‐] / ɪˈfɛk tɪv, iˈfɛk‐ /




Usage

What are other ways to say effective? The adjective effective is applied to a person or a thing that has the power to, or which actually does, produce an effect: an effective boss, remedy, speech. Effectual is used especially of that which produces the effect desired or intended, or a decisive result: An effectual bombardment silenced the enemy. Efficacious suggests the capability of achieving a certain end: an efficacious plan, medicine. Efficient (applied also to persons) implies the skillful use of energy or industry to accomplish desired results with little waste of effort: efficient methods; an efficient manager. 

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

“I think it is the most effective way to potentially make hospital systems do what they need to do to support doctors,” Maloney said.

From Salon • May 27, 2026

A regenerative approach, if eventually proven safe and effective, would aim at a different challenge: replacing or restoring damaged neural cells.

From Science Daily • May 27, 2026

“He could come across as self-effacing and deferential, but in Don’s skilled hands those were qualities that made him an enormously strong and effective leader,” Boccardi said.

From Los Angeles Times • May 27, 2026

The French state has had effective control of the group as a French public company holds a significant stake, with Germany's Wegmann family owning the other part.

From Barron's • May 26, 2026

One stated, “In developing countries, people with multi-drug-resistant tuberculosis usually die, because effective treatment is often impossible in poor countries.”

From "Mountains Beyond Mountains" by Tracy Kidder and Michael French




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