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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.

Media Matters has been very, very effective at this job, which has made it a target, quite honestly.

From Slate • May 18, 2026

The war has led to an effective blockade of the Strait of Hormuz, through which around 20 percent of global oil exports pass in peacetime.

From Barron's • May 18, 2026

With the effective closure of the Strait of Hormuz, the oil market has faced one of its biggest supply shocks in decades, he said.

From MarketWatch • May 18, 2026

Traditional political reporting asks whether leaders are competent, ethical and effective.

From Salon • May 18, 2026

Cold is an effective alarm clock, and I was up before the sun.

From "The Marrow Thieves" by Cherie Dimaline




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